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Creatine Monohydrate (Micronized) 1000 Grams

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Manufacturer: *Supplement Direct*
Manufacturer Part No: 7348900315
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One of the keys to success for anyonewho exercises is to keep the muscles and brain energized. Muscle contraction and relaxation are fueled by a chemical form of energy in our cells, called adenosine triphosphate (ATP). However, muscles have only a small supply of ATP which is rapidly depleted during exercise, particularly of the anaerobic (short, intense) kind. When muscles need quick, explosive energy, as in weightlifting or sprinting, the body resynthesizes this ATP supply using creatine phosphate.

Creatine is a naturally occurring compound produced by the liver and stored in the brain, skeletal and cardiac muscle, sperm and certain cells of the immune system where it is used to make creatine phosphate (CP), a key substance that helps speed up the ATP refueling process. CP breaks down rapidly during the first few minutes of intense exercise. Decline in muscle power and the onset of fatigue during repeated intense muscle contractions are thought to result from a depletion of muscle CP stores. More creatine in the muscles would mean more CP to unleash more energy. Muscles then are able to do more work at higher intensity.

1000 Grams 
Supplement Facts
Serving Size5Gram
Servings Per Container200
Amount Per Serving % Daily Value
Creatine Monohydrate 5grams *
* Daily Value not established
Other Ingredients
Pure Pharmaceutical Grade Creatine Monohydrate.

Directions For Supplement Direct Micronized Creatine Monohydrate: Take 2 servings 3 times a day during the loading phase and 1-2 servings a day for the maintenance dose, preferable once in the morning and once after your workout. Take with non-acidic juice for best results (Grape works best).


* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.


Creatine supplementation and exercise performance : recent findings.

Bemben MG, Lamont HS.

Neuromuscular Research Laboratory, Department of Health and Sport Sciences, University of Oklahoma, Norman, Oklahoma, USA.

Creatine monohydrate (Cr) is perhaps one of the most widely used supplements taken in an attempt to improve athletic performance. The aim of this review is to update, summarise and evaluate the findings associated with Cr ingestion and sport and exercise performance with the most recent research available. Because of the large volume of scientific literature dealing with Cr supplementation and the recent efforts to delineate sport-specific effects, this paper focuses on research articles that have been published since 1999.Cr is produced endogenously by the liver or ingested from exogenous sources such as meat and fish. Almost all the Cr in the body is located in skeletal muscle in either the free (Cr: ~40%) or phosphorylated (PCr: ~60%) form and represents an average Cr pool of about 120-140g for an average 70kg person.It is hypothesised that Cr can act though a number of possible mechanisms as a potential ergogenic aid but it appears to be most effective for activities that involve repeated short bouts of high-intensity physical activity. Additionally, investigators have studied a number of different Cr loading programmes; the most common programme involves an initial loading phase of 20 g/day for 5-7 days, followed by a maintenance phase of 3-5 g/day for differing periods of time (1 week to 6 months). When maximal force or strength (dynamic or isotonic contractions) is the outcome measure following Cr ingestion, it generally appears that Cr does significantly impact force production regardless of sport, sex or age. The evidence is much more equivocal when investigating isokinetic force production and little evidence exists to support the use of Cr for isometric muscular performance. There is little benefit from Cr ingestion for the prevention or suppression of muscle damage or soreness following muscular activity.When performance is assessed based on intensity and duration of the exercises, there is contradictory evidence relative to both continuous and intermittent endurance activities. However, activities that involve jumping, sprinting or cycling generally show improved sport performance following Cr ingestion. With these concepts in mind, the focus of this paper is to summarise the effectiveness of Cr on specific performance outcomes rather than on proposed mechanisms of action.The last brief section of this review deals with the potential adverse effects of Cr supplementation. There appears to be no strong scientific evidence to support any adverse effects but it should be noted that there have been no studies to date that address the issue of long-term Cr usage.

Acute creatine monohydrate supplementation: a descriptive physiological profile of responders vs. nonresponders.

Syrotuik DG, Bell GJ.

Faculty of Physical Education and Recreation, University of Alberta, Edmonton, Canada.

The purpose of this study was to describe the physiological profile of responders (>20 dry weight [dw] increase in total intramuscular creatine monohydrate [Cr] + phosphorylated creatine [PCr]) versus nonresponders (<10 dw increase) to a 5-day Cr load (0.3 in 11 healthy men (mean age = 22.7 years). Pre-post 5-day cellular measures included total resting Cr content (Cr + PCr), fiber type composition, and fiber type cross-sectional area (CSA) determined from muscle biopsies of the vastus lateralis. Body mass, daily dietary intake, 24-hour urine outputs, urinary Cr and creatinine (CrN), and strength performance measures (1 repetition maximum [1RM] bench and leg press) were also assessed before and after the 5-day loading period. Results indicated that there were 3 levels of response to the 5-day supplementation: responders (R), quasi responders (QR), and nonresponders (NR) with mean changes in resting Cr + PCr of 29.5 dw (n = 3), 14.9 dw (n = 5), and 5.1 dw (n = 3), respectively. The results support a person-by-treatment interaction to acute Cr supplementation with R possessing a biological profile of lowest initial levels of Cr + PCr, greatest percentage of type II fibers, and greatest preload muscle fiber CSA and fat-free mass. Responders also showed improvement in 1RM leg press scores following the 5-day loading period. NR had higher preload levels of Cr + PCr, less type II muscle fibers, small preload muscle CSA, and lower fat-free mass and displayed no improvements in 1RM strength scores. The results suggest that to be considered a responder to acute oral supplementation, a favorable preexisting biological profile may determine the final extent to which an individual responds to supplementation. Physiologic profiles of nonresponders appear to be different and may limit their ability to uptake Cr. This may help partially explain the reported equivocal performance findings in the Cr supplementation literature.
J Strength Cond Res. 2004 Aug;18(3):610-7



R.B. Kreider, C. Rasmussen, J. Ransom, and A.L. Almada. Exercise and Sport Nutrition Laboratory, Department of HMSE, The University of Memphis, Memphis, TN 38152.

Anecdotal reports have suggested that creatine supplementation during training may increase the incidence of cramping, muscle strains/pulls, and/or gastrointestinal (GI) distress. This study evaluated the incidence of side effects reported in subjects who participated in one of five placebo, double-blind, and randomized studies which investigated the effects of ingesting creatine or creatine- containing supplements during training. One hundred sixty- four post-study questionnaires were evaluated in which 84 subjects ingested placebos and 80 subjects ingested supplements containing creatine during training. Training and supplementation protocols included: 1.) 9 d of ingesting a carbohydrate placebo (n=9) or 21 g/d of creatine (n=9) in male and female elite junior swimmers during training (20.5 � 2 hr/wk); 2.) 14 d of ingesting a carbohydrate placebo (n=7), 16.5 g/d of creatine (n=8), or Phosphagen HP� containing 15.75 g/d of creatine (n=9) in untrained and competitively trained male and female endurance athletes; 3.) 28 d of ingesting a carbohydrate placebo (n=11), Gainers Fuel 1000� (n=10), or Phosphagain� containing 20 g/d of creatine (n=7) during resistance-training (7.6 � 2 hr/wk); 4.) 28 d of ingesting a carbohydrate placebo (n=22) or Phoshagen HP containing 15.75 g/d of creatine (n=23) in college football players undergoing resistance/agility training (8 hr/wk); or, 5.) 84 d of ingesting a carbohydrate placebo (n=13), MetRx� (n=12), Phosphagain� containing 20 g/d of creatine (n=11), or Phosphagain II� containing 25 g/d of creatine (n=13) in college football players undergoing resistance/agility training and spring football practice. Results revealed no reports of muscle cramping or injury in subjects taking placebos or creatine-containing supplements during training. Further, a significantly greater incidence (p<0.05) of GI distress was reported in subjects ingesting placebos compared to creatine-containing supplements. These findings indicate that creatine supplementation during various exercise training conditions does not increase the incidence of muscle cramping, muscle strains/pulls, or GI distress. Presented at the National Strength and Conditioning Association Convention, Nashville, TN, June 24-28, 1998.

Creatine Monohydrate May Improve Blood Lipid Profiles

C.P. Earnest, A.L. Almada, and T.L. Mitchell, High- Performance Capillary Electrophoresis-Pure Creatine Monohydrate Reduces Blood Lipids in Men and Women,Clin. Sci. 91 (1996): 113-118.

Just when you thought the news about creatine monohydrate couldn't get any better, we're finding that creatine may, in addition to its well-documented positive effects on body composition and athletic performance, reduce blood lipids. A team of researchers in Dallas, Texas, including EAS researcher Anthony Almada, B.Sc., M.Sc., examined the effects of creatine monohydrate (5 grams) combined with glucose (1 gram) on the blood chemistry of 34 male and female subjects, ages 32-70 years. Scientists measured creatine's effects against those of a placebo containing 6 grams of glucose for a total of 56 days, with dosages of both creatine and the placebo given orally 4 times a day for 5 days, then twice a day for 51 days.

Results indicated significant reductions in plasma total cholesterol, triglycerides, and very low-density lipoproteins (VLDL) in the creatine monohydrate group. High levels of these substances in the blood can lead to heart disease, a problem that killed over 740,000 Americans in 1993 alone. Researchers also noted a trend towards a reduction in blood glucose for subjects ingesting creatine monohydrate.

Additionally, the trend for lower blood glucose in subjects receiving creatine monohydrate indicates the possibility that creatine enhances insulin sensitivity, which could prove helpful for some diabetics. This result could also mean that glucose moves from the bloodstream into muscle cells more quickly with creatine use. Again, further research is necessary to determine whether or not these results can be repeated and strengthened, but there is a strong possibility that creatine monohydrate can actually lower blood lipids and improve glucose metabolism.

Safety Report on Creatine

T. Mitchell, A. Almada, and C. Earnest, Creatine Reduces Blood Lipid Concentrations in Men and Women, Influence of Chronic Creatine Supplementation on Hepatorenal Function, Impact of Chronic Creatine Supplementation on Serum Enzyme Concentrations, FASEB J. 10.3 (1996): A251, A791, A790.

A group of scientists from Texas Woman's University and the Cooper Clinic in Dallas, Texas, presented results of the longest creatine supplementation study to date. These studies were designed to assess the influence of eight weeks of creatine ingestion on various markers of metabolism and organ function. Although a large number of creatine supplementation studies have been conducted, virtually all of them focused on muscular performance and muscle metabolism after short-term supplementation.

Thirty-four men and women (ages 32-70) participated in this double-blind, placebo-controlled study. Twenty subjects received creatine (20 grams per day for 5 days, then 10 grams a day for 51 days, followed by a 4- week washout /non-supplemented period), while the remaining 14 received a glucose placebo. Few changes in the blood profiles were noted in the creatine group: a slight increase in blood urea nitrogen (BUN) in only the women at week eight was seen (BUN is a marker of liver and kidney function and protein metabolism), and among the men, at week three, a mild elevation in creatine phosphokinase (CPK) was seen. Both returned to baseline after week 12. CPK is an enzyme critical to creatine and energy metabolism. It's continuously released from various cells including skeletal muscle and is a crude marker of muscle cell membrane integrity.

Interestingly, recent university studies with creatine HP noted similar effects in a group of young, resistance- trained males, with CPK going up in the HP group but not in the placebo group. Increases in CPK suggest either an increase in muscular force or tension production, consequent decreases in the stability of muscle-cell membranes (leading to increased CPK leak), decreases in muscle-cell membrane integrity (more holes), and/or an increase in the activity/concentration of this enzyme due to increased concentrations of one of the substrates for this enzyme, which may induce creatine-loaded cells to synthesize more CPK. Why women didn't show an increase in CPK may be due to the protective effect of estrogens on cell membranes. (The majority of the women had moderate circulating concentrations of estrogens, either naturally or from oral estrogens.)

Liver enzymes didn't increase nor did blood creatinine, the irreversible breakdown product of creatine, commonly mistaken for creatine and incorrectly believed to be toxic to the kidneys.

Comments: The most fascinating observation from these studies was a drop in blood triglycerides, total cholesterol, and VLDL cholesterol, a blood lipoprotein enriched in triglycerides, in the creatine group (these findings were published in full, peer-review form in the July 1996 issue of Clinical Science). As all of the subjects began with moderately elevated blood cholesterol and triglycerides, these findings suggest creatine may prove to be a useful nutritional supplement in the management of high blood lipids. The mechanism of creatine's action is suggested by the reduction of blood glucose in the males who received creatine. As insulin regulates both carbohydrate and triglyceride/VLDL metabolism, and creatine and fourth-generation diabetes drugs (like metformin) are classified as guanidine- containing compounds with glucoregulatory actions, this raises the likelihood that, at least in this group of individuals, creatine may be capable of potentiating the action of insulin. Similar to the persistence of vanadyl sulfate's effects in diabetic individuals, four weeks after going off Phosphagen, triglycerides and VLDL remained reduced. The fact that EAS funded these studies underscores the company's commitment to extending the science of creatine supplementation by continuing to examine the safety and biological effects of this fascinating nutrient.

Creatine and its application as an ergogenic aid.

Greenhaff PL. Department of Physiology and Pharmacology, University Medical School, Queens Medical Centre, Nottingham, U.K. Int J Sport Nutr, 5 Suppl():S100-10 1995 Jun

Phosphocreatine (PCr) availability is likely to limit performance in brief, high-power exercise because the depletion of PCr results in an inability to maintain adenosine triphosphate (ATP) resynthesis at the rate required. It is now known that the daily ingestion of four 5-g doses of creatine for 5 days will significantly increase intramuscular creatine and PCr concentrations prior to exercise and will facilitate PCr resynthesis during recovery from exercise, particularly in those individuals with relatively low creatine concentrations prior to feeding. As a consequence of creatine ingestion, work output during repeated bouts of high-power exercise has been increased under a variety of experimental conditions. The reduced accumulation of ammonia and hypoxanthine in plasma and the attenuation of muscle ATP degradation after creatine feeding suggest that the ergogenic effect of creatine is achieved by better maintaining ATP turnover during contraction.

Creatine depletion elicits structural, biochemical, and physiological adaptations in rat costal diaphragm.

Levine S; Tikunov B; Henson D; LaManca J; Sweeney HL Pulmonary and Critical Care Section, Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA. Am J Physiol, 271(5 Pt 1):C1480-6 1996 Nov

To elucidate adaptations elicited by creatine (Cr) depletion in the costal diaphragm (Dia), 16 12-wk-old male Fisher 344 rats had 2% beta-guanidinopropionic acid (beta- GPA), a competitive inhibitor of Cr transport into muscle, added to their food; a control group (Con) of 16 rats ate normal rat chow. After 18 wk, beta-GPA and Con Dia did not differ histochemically with respect to fiber-type distribution; however, the cross-sectional area of type II (b + x) fibers was 33% less in beta-GPA than Con Dia. Biochemically, the proportion of myosin heavy chain IIb in beta-GPA Dia was decreased 42% from Con Dia, whereas the proportions of myosin heavy chains I and IIa were increased. Physiologically, both peak twitch tension and tetanic tension in beta-GPA Dia were decreased 40% from Con. To assess fatigability, we used the protocol of Kelsen and Nochomovitz (J. Appl. Physiol. 53; 440-447, 1982) for 2-6 min duration; the percentage of initial force exhibited by beta-GPA Dia was approximately twice that of Con Dia. We conclude that these structural, biochemical, and physiological adaptations elicited by Cr depletion can all be explained by selective atrophy of IIb muscle fibers in the Dia.

Creatine kinase of rat heart mitochondria. The demonstration of functional coupling to oxidative phosphorylation in an inner membrane-matrix preparation.

Saks VA; Kuznetsov AV; Kupriyanov VV; Miceli MV; Jacobus WE J Biol Chem, 260(12): 7757-64 1985 Jun 25

To define more clearly the interactions between mitochondrial creatine kinase and the adenine nucleotide translocase, the outer membrane of rat heart mitochondria was removed by digitonin, producing an inner membrane- matrix (mitoplast) preparation. This mitoplast fracton was well-coupled and contained a high specific activity of mitochondrial creatine kinase. Outer membrane permeabilization was documented by the loss of adenylate kinase, a soluble intermembrane enzyme, and by direct antibody inhibition of mitochondrial creatine kinase activity. With this preparation, we documented four important aspects of functional coupling. Kinetic studies showed that oxidative phosphorylation decreased the value of the ternary enzyme-substrate complex dissociation constant for MgATP from 140 to 16 microM. Two approaches were used to document the adenine nucleotide translocase specificity for ADP generated by mitochondrial creatine kinase. Exogenous pyruvate kinase (20 IU/ml) could not readily phosphorylate ADP produced by creatine kinase, since added pyruvate kinase did not markedly inhibit creatine + ATP-stimulated respiration. Additionally, when ADP was produced by mitochondrial creatine kinase, the inhibition of the translocase required 2 nmol of atractyloside/mg of mitoplast protein, while only 1 nmol/mg was necessary when exogenous ADP was added. Finally, the mass action ratio of the mitochondrial creatine kinase reaction exceeded the apparent equilibrium constant when ATP was supplied to the creatine kinase reaction by oxidative phosphorylation. Overall, these results are consistent with much data from intact rat heart mitochondria, and suggest that the outer membrane plays a minor role in the compartmentation of adenine nucleotides. Furthermore, since the removal of the outer membrane does not alter the unique coupling between oxidative phosphorylation and mitochondrial creatine kinase, we suggest that this cooperation is the result of protein-protein proximity at the inner membrane surface

13/08/03 - Taking supplements of creatine, a compound found in muscle tissue, can significantly boost both working memory and general intelligence, according to researchers in Australia.

The work, to be published in the Proceedings Bjournal published by the UK�s Royal Society, found that young adult vegetarians who took 5g of creatine had better recall under pressure than the control group.

"The level of creatine supplementation chosen was 5g per day as this is a level that has previously been shown to increase brain creatine levels. This level is comparable to that taken to boost sports fitness," explained Dr Caroline Rae from the University of Sydney.

�Vegetarians or vegans were chosen as carnivores and omnivores obtain a variable level of creatine depending on the amount and type of meat they eat - although to reach the level of supplementation in this experiment would involve eating around 2kg of meat a day!" she added.

Creatine supplements are widely used by athletes and fitness fanatics to increase sports performance. It is manufactured by the body, but also found in dietary sources such as meat. A close relative of the amino acids, it has also been trialed successfully in the treatment of neurological, neuromuscular and atherosclerotic disease.

"We know that creatine plays a pivotal role in maintaining energy levels in the brain," said Dr Rae. "It was a reasonable hypothesis that supplementing a diet with creatine could assist brain function."

The experiment tested this hypothesis by giving a group of 45 subjects a creatine supplement and a second group a placebo for six weeks, followed by a six week period with no intake and a final six week period when the control and placebo group were swapped. Intelligence and memory were tested at four points: the start of the trial; the end of the first six week period; and the start and endpoint of the final six week period.

The effect on working memory was tested using a backward digit span test in which the subject has to repeat in reverse order progressively longer verbal random number sequences. Intelligence was tested using Ravens Advanced Progressive Matrices - a methodology commonly used for IQ assessment involving completion of pattern sequences. The test is a well validated measure of general ability with minimal dependence on cultural factors.

"Both of these tests require fast brain power and the Ravens task was conducted under time pressure," said Dr Rae. "The results were clear with both our experimental groups and in both test scenarios: creatine supplementation gave a significant measurable boost to brain power. For example in the digit span test, subjects� ability to remember long numbers, like telephone numbers, improved from a number length of about 7 to an average of 8.5 digits."

The study shows that increased creatine intake results in improved brain function, similar to effects shown previously in muscle and heart. The results also appear to back previous observations showing that brain creatine levels correlate with improved recognition memory and reduced mental fatigue.

"These findings underline a dynamic and significant role of brain energy capacity in influencing brain performance," said Dr Rae. "Increasing the energy available for computation increases the power of the brain and this is reflected directly in improved general ability."

Long-term supplementation with creatine has yet to be declared fully safe as there have been reported effects on glucose homeostasis (the regulation of blood sugar levels) and potential subjects with a medical history of diabetes were excluded from the experiment. In addition taking the supplement can have some antisocial effects, �[it] can make you a considerably less 'fragrant' person�, according to Dr Rae.

But she added that creatine supplementation may be of use to those requiring boosted mental performance in the short-term, such as university students.

Source: Proceedings of the Royal Society: Biological Sciences, Vol. 270, No. 1529, (22 October 2003)

Researchers have now been able to stretch creatine�s usefulness beyond

the realm of professional sports. In the newest issue of the Royal

Society Proceedings of Biological Sciences, Australian researchers

have found creatine supplementation in vegetarians to enhance

cognitive skills. Forty-five vegetarians college students were

selected (meat eaters get abundant amounts of creatine in their

diets), with one group taking five grams of creatine daily for six

weeks and another group taking a placebo. After the initial six weeks,

the subjects went six weeks without any supplementation. During the

final six weeks, the subjects then switched supplements. The creatine

significantly enhanced the subjects� cognitive performance.

When searching for an explanation, the researchers deduced that the

increase in brain energy provided by creatine influenced brain

performance. Even though Japanese researchers have found creatine

helpful in preventing mental fatigue during mathematical

problem-solving tests, creatine has also found usefulness in treating

neuromuscular disease, such as amyotropic lateral sclerosis (Lou

Gehrig�s Disease) (1).

One area of creatine metabolism that is receiving attention is the

effect of creatine metabolism on the kidneys. While some studies

report both short-term (4) and long-term (3) use of creatine to be

benign to the kidneys, all agree that more research still needs to be



1. Tarnopolsky M. Creatine monohydrate increases strength in patients

with neuromuscular disease. Neurology 1999; 52: 854.

2. Casey A. Does dietary creatine supplementation play a role in

skeletal muscle metabolism and performance? American Journal of

Clinical Nutrition 2000; 72: 607S � 617

3. Poortmans JR. Long-term oral creatine supplementation does not

impair renal function in healthy athletes. Medical Science and Sports

Exercise 2000; 32(1): 248-249

4. Farquhar WB. Effects of creatine use on the athlete's kidney.

Current Sports Medicine Reports 2002; 1(2): 103-6




What is it?

Creatine is a chemical that is normally found in the body, mostly in muscles. It is made by the body and can also be obtained from certain foods. Fish and meats are good sources of creatine. Creatine can also be made in the laboratory.

Creatine is most commonly used for improving exercise performance and increasing muscle mass in athletes and older adults. There is some science supporting the use of creatine in improving the athletic performance of young, healthy people during brief high-intensity activity such as sprinting. But older adults don’t seem to benefit. Creatine doesn’t seem to improve strength or body composition in people over 60.

Creatine use is widespread among professional and amateur athletes and has been acknowledged by well-known athletes such as Mark McGuire, Sammy Sosa, and John Elway. Following the finding that carbohydrate solution further increases muscle creatine levels more than creatine alone, creatine sports drinks have become popular.

Creatine is allowed by the International Olympic Committee, National Collegiate Athletic Association (NCAA), and professional sports. However, the NCAA no longer allows colleges and universities to supply creatine to their students with school funds. Students are permitted to buy creatine on their own and the NCAA has no plans to ban creatine unless medical evidence indicates that it is harmful. With current testing methods, detection of supplemental creatine use would not be possible.

In addition to improving athletic performance, creatine is used for congestive heart failure (CHF), depression, bipolar disorder, Parkinson’s disease, diseases of the muscles and nerves, an eye disease called gyrate atrophy, and high cholesterol. It is also used to slow the worsening of amyotrophic lateral sclerosis (ALS, Lou Gehrig’s disease), rheumatoid arthritis, McArdle’s disease, and for various muscular dystrophies.

Americans use more than 4 million kilograms of creatine each year.

How effective is it?

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.

The effectiveness ratings for CREATINE are as follows:

Possibly effective for...

  • Athletic performance. Many factors seem to influence the effectiveness of creatine, including the fitness level and age of the person using it, the type of sport, and the dose. Creatine does not seem to improve performance in aerobic exercises, or benefit older people. Also, creatine does not seem to increase endurance or improve performance in highly trained athletes. There is some evidence that creatine “loading,” using 20 grams daily for 5 days, may be more effective than continuous use. However, there is still some uncertainty about exactly who can benefit from creatine and at what dose. Studies to date have included small numbers of people (all have involved fewer than 72 participants), and it is not possible to draw firm conclusions from such small numbers.
  • Parkinson’s disease. Creatine might slow the worsening of some symptoms in people with early Parkinson’s disease.
  • Syndromes caused by problems metabolizing creatine. Problems metabolizing creatine cause low levels of creatine in the brain, which results in mental retardation, seizures, autism, and movement disorders. Taking creating by mouth daily for up to 3 years increases creatine levels in the brain and improves movement disorders and seizures, but has little effect on mental ability in children and young adults with the creatine deficiency syndrome called gaunidinoacetate methyltransferase (GAMT) deficiency. However, taking creatine for up to 8 years seems to improve attention, language, and academic performance in children with the creatine deficiency syndrome called arginine-glycine amidinotrasferase (AGAT) deficiency. Taking creatine does not seem to improve brain creatine levels, movement disorders, or mental abilities in children with creatine transporter defect.

Possibly ineffective for...

  • Amyotrophic lateral sclerosis (ALS, Lou Gehrig’s disease). Taking creatine by mouth does not seem to slow disease progression or improve survival in people with ALS.

Insufficient evidence to rate effectiveness for...

  • Skin aging. Early research shows that applying cream containing creatine, guarana, and glycerol to the face daily for 6 weeks reduces wrinkles and skin sagging in men. Other research suggests that a cream containing creatine and folic acid reduces wrinkles and improves sun-damaged skin.
  • Lung disease (Chronic obstructive pulmonary disease). Research on the effects of creatine in people with chronic obstructive pulmonary disease (COPD) is inconsistent. Some research suggests that taking creating daily does not improve lung function. However, other research suggests that taking creatine may improve lung function or exercise capacity.
  • Heart failure. Taking creatine by mouth daily for 5-10 days seems to improve muscle strength and endurance but not symptoms of heart failure.
  • Depression. Early research suggests that taking creatine daily for 8 weeks enhances the effects of the antidepressant drug escitalopram in women with major depressive disorder.
  • Diabetes. Early research shows that taking creatine by mouth for 5 days reduces blood sugar after eating in people with newly diagnosed diabetes. However, the effects of taking creatine for longer than 5 days in people with diabetes are not know.
  • Vision loss (gyrate atrophy of the choroid and retina). Early research shows that creatine deficiency, which has been associated with this form of vision loss, can be corrected with supplements. Taking creatine daily for one year seems to slow eye damage and vision loss.
  • Inherited nerve damage (hereditary motor sensory neuropathy). Early research in people with inherited nerve damage diseases such as Charcot-Marie-Tooth Disease, suggest that taking creatine by mouth daily for between one and 12 weeks has no effect on muscle strength or endurance.
  • Inherited disease called Huntington’s disease. Early research suggests that taking creatine by mouth daily for one year does not improve muscle strength, coordination, or symptoms in people with Huntington’s disease.
  • Muscle diseases such as polymyositis and dermatomyositis. Early studies suggest taking creatine might produce small improvements in muscle strength in people with these conditions.
  • Muscle disorder called McArdle disease. Some early research suggests that taking creatine by mouth daily improves muscle function in some people with McArdle disease. However, taking higher doses of creatine seem to make muscle pain worse.
  • Muscular and neurological diseases called mitochondrial myopathies. Early research suggests that taking creatine by mouth does not improve muscle function or quality of life in people with mitochondrial myopathies. However, creatine might improve some measures of muscle strength.
  • Multiple sclerosis. Early research suggests that taking creatine by mouth daily for 5 days does not improve exercise ability in people with multiple sclerosis.
  • Loss of muscle tissue. Taking creatine by mouth daily does not seem to increase muscle mass or strength in men with muscle loss due to HIV. However, taking creatine seems to help maintain muscle mass and reduce the loss of muscle strength that is associated with having to wear a cast.
  • Muscle cramps. Early research shows that taking creatine by mouth before hemodialysis treatments seems to reduce muscle cramps.
  • Muscular dystrophy. Early research on the use of creatine in people with muscular dystrophy is not clear. Some evidence shows that muscle strength and fatigue seem to improve after taking creatine daily for 8-16 weeks. However, other research suggests that creatine provides no benefit for people with muscular dystrophy.
  • Breathing problems while sleeping in newborns. Early research shows that giving creatine to premature infants does not improve breathing problems while sleeping.
  • Osteoarthritis. Early research suggests that taking creating by mouth daily in combination with strengthening exercises improves physical functioning in postmenopausal women with knee osteoarthritis.
  • Parkinson’s disease. Early research suggests that taking creatine daily reduces how quickly Parkinson’s disease progresses. However, in people who already have advanced Parkinson’s disease, taking creatine does not provide this benefit.
  • Nervous system disorder called Rett syndrome. Early research suggests that taking creating daily for 6 months can slightly improve symptoms in females with Rett syndrome.
  • Rheumatoid arthritis. Early research shows that taking creatine by mouth daily increases muscle strength, but does not improve physical functioning in people with rheumatoid arthritis.
  • Schizophrenia. Early research shows that taking creatine by mouth daily for two months does not improve symptoms or mental function in people with schizophrenia.
  • Spinal cord injury. Early research shows that taking creatine by mouth daily for 7 days increases the ability to exercise by increasing lung function in people with a spinal cord injury. However, other research shows that creatine does not improve wrist muscle or hand function.
  • Muscle loss in the spine. Early research suggests that children with muscle loss in the spine do not benefit from taking creatine by mouth.
  • Recovery from surgery. Early research shows that taking creatine daily does not speed up recovery of muscle strength after surgery.
  • Trauma. Early research suggests that taking creatine by mouth daily reduces amnesia, headache, dizziness, and fatigue in children after a traumatic brain injury.
  • High cholesterol.
  • Bipolar disorder.
  • Other conditions.
More evidence is needed to rate the effectiveness of creatine for these uses.

How does it work?

Return to top
Creatine is involved in making the energy muscles need to work.

Vegetarians and other people who have lower total creatine levels when they start taking creatine supplements seem to get more benefit than people who start with a higher level of creatine. Skeletal muscle will only hold a certain amount of creatine; adding more won’t raise levels any more. This “saturation point” is usually reached within the first few days of taking a “loading dose.”

Are there safety concerns?

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Creatine is LIKELY SAFE when taken by mouth appropriately for up to 5 years.

When taken by mouth in high doses, creatine is POSSIBLY UNSAFE. There is some concern that it could harm the kidney, liver, or heart function. However, a connection between high doses and these negative effects has not been proven. Creatine can also cause stomach pain, nausea, diarrhea, and muscle cramping.

Creatine causes muscles to draw water from the rest of your body. Be sure to drink extra water to make up for this. Also, if you are taking creatine, don't exercise in the heat. It might cause you to become dehydrated.

Many people who use creatine gain weight. This is because creatine causes the muscles to hold water, not because it actually builds muscle.

There is some concern that combining creatine with caffeine and the herb ephedra (also called Ma Huang) might increase the chance of having serious side effects such as stroke.

There is concern that creatine might cause irregular heartbeat in some people. But more information is needed to know if creatine can cause this problem.

There is concern that creatine might cause a skin condition called pigmented purpuric dermatosis in some people. But more information is needed to know if creatine can cause this problem.

Special precautions & warnings:

Pregnancy and breast-feeding: Not enough is known about the use of creatine during pregnancy and breast-feeding. Stay on the safe side and avoid use.

Kidney disease or diabetes: Do not use creatine if you have kidney disease or a disease such as diabetes that increases your chance of developing kidney disease. There is some concern that creatine might make kidney disease worse.

Are there interactions with medications?

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Be cautious with this combination.

Medications that can harm the kidneys (Nephrotoxic Drugs)
Taking high doses of creatine might harm the kidneys. Some medications can also harm the kidneys. Taking creatine with other medications that can harm the kidneys might increase the chance of kidney damage.

Some of these medications that can harm the kidneys include cyclosporine (Neoral, Sandimmune); aminoglycosides including amikacin (Amikin), gentamicin (Garamycin, Gentak, others), and tobramycin (Nebcin, others); nonsteroidal anti-inflammatory drugs (NSAIDs) including ibuprofen (Advil, Motrin, Nuprin, others), indomethacin (Indocin), naproxen (Aleve, Anaprox, Naprelan, Naprosyn), piroxicam (Feldene); and numerous others.

Are there interactions with herbs and supplements?

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There is some concern that combining caffeine, ephedra, and creatine might increase the risk of serious adverse effects. There is a report of stroke in an athlete who consumed creatine monohydrate 6 grams, caffeine 400-600 mg, ephedra 40-60 mg, and a variety of other supplements daily for 6 weeks. Caffeine might also decrease creatine's beneficial effects on athletic performance.

There is some concern that combining ephedra, caffeine, and creatine might increase the risk of serious adverse effects. There is a report of stroke in an athlete who consumed creatine monohydrate 6 grams, caffeine 400-600 mg, ephedra 40-60 mg, and a variety of other supplements daily for 6 weeks.

Are there interactions with foods?

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Combining carbohydrates with creatine can increase muscle creatine levels more than creatine alone. Supplementing 5 grams of creatine with 93 grams of simple carbohydrates 4 times daily for 5 days can increase muscle creatine levels as much as 60% more than creatine alone.

What dose is used?

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The following doses have been studied in scientific research:

  • For improving physical performance, several dosing regimens have been tried:
    • Creatine is typically loaded with 20 grams per day (or 0.3 grams per kg) for 5 days followed by a maintenance dose of 2 or more grams (0.03 grams per kg) daily, Although 5 day loading is typical, 2 days of loading has also been used.
    • A loading dose of 9 grams per day for 6 days has also been used. Some sources suggest that, instead of acutely loading, similar results can be obtained with 3 grams per day for 28 days.
During creatine supplementation, the water intake should be 64 ounces per day.
  • For heart failure: 20 grams per day for 5-10 days.
  • For Parkinson's disease:
    • 10 grams/day.
    • A loading dose of creatine 20 grams/day for 6 days followed by 2 grams/day for 6 months, and then 4 grams daily for 18 months has also been used.
  • For improving resistance training in people with Parkinson's disease: a loading dose of 20 grams/day for 5 days, followed by 5 grams/day.
  • For gyrate atrophy: 1.5 grams per day.
  • For muscular dystrophies: 10 grams per day has been used by adults and 5 grams per day has been used by children.
  • For McArdle’s disease: 150 mg / kg daily for 5 days and then continue with 60 mg / kg / day.

Other names

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Cr, Creatina, Créatine, Créatine Anhydre, Creatine Anhydrous, Creatine Citrate, Créatine Citrate, Creatine Ethyl Ester, Créatine Ethyl Ester, Creatine Ethyl Ester HCl, Créatine Ethyl Ester HCl, Créatine Kré Alkaline, Creatine Malate, Créatine Malate, Creatine Monohydrate, Créatine Monohydrate, Créatine Monohydratée, Creatine Pyroglutamate, Créatine Pyroglutamate, Creatine Pyruvate, Créatine Pyruvate, Dicreatine Malate, Dicréatine Malate, Di-Creatine Malate, Éthyle Ester de Créatine, Glycine, N-(aminoiminométhyl)-N-Méthyl, Kre-Alkalyn Pyruvate, Malate de Tricréatine, N-amidinosarcosine, N-(aminoiminomethyl)-N Methyl Glycine, Phosphocreatine, Phosphocréatine, Tricreatine HCA, Tricréatine HCA, Tricreatine Malate, Tricréatine Malate.


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To learn more about how this article was written, please see the Natural Medicines Comprehensive Database methodology.


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  1. Lawrence SR, Preen DB, Dawson BT, and et al. The effect of oral creatine supplementation on maximal exercise performance in competitive rowers. Sports Medicine, Training and Rehabilitation. 1997;7:243-253.
  2. Myburgh KH, Bold A, Bellinger B, and et al. Creatine supplementation and sprint training in cyclists: metabolic and performance effects. Med Sci Sports Exerc 1996;28(5 Suppl ):S81.
  3. Vandebuerie, F., Vanden Eynde, B., Vandenberghe, K., and Hespel, P. Effect of creatine loading on endurance capacity and sprint power in cyclists. Int J Sports Med 1998;19:490-495. View abstract.
  4. Aaserud, R., Gramvik, P., Olsen, S. R., and Jensen, J. Creatine supplementation delays onset of fatigue during repeated bouts of sprint running. Scand.J Med Sci.Sports 1998;8(5 Pt 1):247-251. View abstract.
  5. Maganaris, C. N. and Maughan, R. J. Creatine supplementation enhances maximum voluntary isometric force and endurance capacity in resistance trained men. Acta Physiol Scand. 1998;163:279-287. View abstract.
  6. Javierre, C., Lizarraga, M. A., Ventura, J. L., Garrido, E., and Segura, R. Creatine supplementation does not improve physical performance in a 150 m race. Rev Esp.Fisiol. 1997;53:343-348. View abstract.
  7. Grindstaff, P. D., Kreider, R., Bishop, R., Wilson, M., Wood, L., Alexander, C., and Almada, A. Effects of creatine supplementation on repetitive sprint performance and body composition in competitive swimmers. Int J Sport Nutr. 1997;7:330-346. View abstract.
  8. Schulze, A., Hess, T., Wevers, R., Mayatepek, E., Bachert, P., Marescau, B., Knopp, M. V., De Deyn, P. P., Bremer, H. J., and Rating, D. Creatine deficiency syndrome caused by guanidinoacetate methyltransferase deficiency: diagnostic tools for a new inborn error of metabolism. J Pediatr. 1997;131:626-631. View abstract.
  9. Volek, J. S., Kraemer, W. J., Bush, J. A., Boetes, M., Incledon, T., Clark, K. L., and Lynch, J. M. Creatine supplementation enhances muscular performance during high-intensity resistance exercise. J Am.Diet.Assoc 1997;97:765-770. View abstract.
  10. Burke, L. M., Pyne, D. B., and Telford, R. D. Effect of oral creatine supplementation on single-effort sprint performance in elite swimmers. Int J Sport Nutr. 1996;6:222-233. View abstract.
  1. Redondo, D. R., Dowling, E. A., Graham, B. L., Almada, A. L., and Williams, M. H. The effect of oral creatine monohydrate supplementation on running velocity. Int J Sport Nutr. 1996;6:213-221. View abstract.
  2. Stockler, S., Hanefeld, F., and Frahm, J. Creatine replacement therapy in guanidinoacetate methyltransferase deficiency, a novel inborn error of metabolism. Lancet 9-21-1996;348:789-790.View abstract.
  3. Greenhaff, P. L., Casey, A., Short, A. H., Harris, R., Soderlund, K., and Hultman, E. Influence of oral creatine supplementation of muscle torque during repeated bouts of maximal voluntary exercise in man. Clin Sci.(Lond) 1993;84:565-571. View abstract.
  4. Lyoo, I. K., Yoon, S., Kim, T. S., Hwang, J., Kim, J. E., Won, W., Bae, S., and Renshaw, P. F. A randomized, double-blind placebo-controlled trial of oral creatine monohydrate augmentation for enhanced response to a selective serotonin reuptake inhibitor in women with major depressive disorder. Am.J.Psychiatry 2012;169:937-945. View abstract.
  5. Wadman, R. I., Bosboom, W. M., van der Pol, W. L., van den Berg, L. H., Wokke, J. H., Iannaccone, S. T., and Vrancken, A. F. Drug treatment for spinal muscular atrophy types II and III. Cochrane.Database.Syst.Rev. 2012;4:CD006282. View abstract.
  6. Ndika, J. D., Johnston, K., Barkovich, J. A., Wirt, M. D., O'Neill, P., Betsalel, O. T., Jakobs, C., and Salomons, G. S. Developmental progress and creatine restoration upon long-term creatine supplementation of a patient with arginine:glycine amidinotransferase deficiency. Mol.Genet.Metab 2012;106:48-54. View abstract.
  7. Peirano, R. I., Achterberg, V., Dusing, H. J., Akhiani, M., Koop, U., Jaspers, S., Kruger, A., Schwengler, H., Hamann, T., Wenck, H., Stab, F., Gallinat, S., and Blatt, T. Dermal penetration of creatine from a face-care formulation containing creatine, guarana and glycerol is linked to effective antiwrinkle and antisagging efficacy in male subjects. J.Cosmet.Dermatol. 2011;10:273-281. View abstract.
  8. Lamontagne-Lacasse, M., Nadon, R., and Goulet E DB. Effect of creatine supplementation on jumping performance in elite volleyball players. Int.J.Sports Physiol Perform. 2011;6:525-533.View abstract.
  9. Zuniga, J. M., Housh, T. J., Camic, C. L., Hendrix, C. R., Mielke, M., Johnson, G. O., Housh, D. J., and Schmidt, R. J. The effects of creatine monohydrate loading on anaerobic performance and one-repetition maximum strength. J.Strength.Cond.Res. 2012;26:1651-1656. View abstract.
  10. Rocic, B., Znaor, A., Rocic, P., Weber, D., and Vucic, Lovrencic M. Comparison of antihyperglycemic effects of creatine and glibenclamide in type II diabetic patients. Wien.Med.Wochenschr. 2011;161(21-22):519-523. View abstract.
  11. Freilinger, M., Dunkler, D., Lanator, I., Item, C. B., Muhl, A., Fowler, B., and Bodamer, O. A. Effects of creatine supplementation in Rett syndrome: a randomized, placebo-controlled trial. J.Dev.Behav.Pediatr. 2011;32:454-460. View abstract.
  12. van de Kamp, J. M., Pouwels, P. J., Aarsen, F. K., ten Hoopen, L. W., Knol, D. L., de Klerk, J. B., de Coo, I. F., Huijmans, J. G., Jakobs, C., van der Knaap, M. S., Salomons, G. S., and Mancini, G. M. Long-term follow-up and treatment in nine boys with X-linked creatine transporter defect. J.Inherit.Metab Dis. 2012;35:141-149. View abstract.
  13. Neves, M., Jr., Gualano, B., Roschel, H., Fuller, R., Benatti, F. B., Pinto, A. L., Lima, F. R., Pereira, R. M., Lancha, A. H., Jr., and Bonfa, E. Beneficial effect of creatine supplementation in knee osteoarthritis. Med.Sci.Sports Exerc. 2011;43:1538-1543. View abstract.
  14. Banerjee, B., Sharma, U., Balasubramanian, K., Kalaivani, M., Kalra, V., and Jagannathan, N. R. Effect of creatine monohydrate in improving cellular energetics and muscle strength in ambulatory Duchenne muscular dystrophy patients: a randomized, placebo-controlled 31P MRS study. Magn Reson.Imaging 2010;28:698-707. View abstract.
  15. Rocic, B., Bajuk, N. B., Rocic, P., Weber, D. S., Boras, J., and Lovrencic, M. V. Comparison of antihyperglycemic effects of creatine and metformin in type II diabetic patients. Clin.Invest Med. 2009;32:E322. View abstract.
  16. Juhasz, I., Gyore, I., Csende, Z., Racz, L., and Tihanyi, J. Creatine supplementation improves the anaerobic performance of elite junior fin swimmers. Acta Physiol Hung. 2009;96:325-336.View abstract.
  17. O'Rourke, D. J., Ryan, S., Salomons, G., Jakobs, C., Monavari, A., and King, M. D. Guanidinoacetate methyltransferase (GAMT) deficiency: late onset of movement disorder and preserved expressive language. Dev.Med.Child Neurol. 2009;51:404-407. View abstract.
  18. Law, Y. L., Ong, W. S., GillianYap, T. L., Lim, S. C., and Von, Chia E. Effects of two and five days of creatine loading on muscular strength and anaerobic power in trained athletes. J.Strength.Cond.Res. 2009;23:906-914. View abstract.
  19. Sakkas, G. K., Mulligan, K., Dasilva, M., Doyle, J. W., Khatami, H., Schleich, T., Kent-Braun, J. A., and Schambelan, M. Creatine fails to augment the benefits from resistance training in patients with HIV infection: a randomized, double-blind, placebo-controlled study. PLoS.One. 2009;4:e4605. View abstract.
  20. Johnston, A. P., Burke, D. G., MacNeil, L. G., and Candow, D. G. Effect of creatine supplementation during cast-induced immobilization on the preservation of muscle mass, strength, and endurance. J.Strength.Cond.Res. 2009;23:116-120. View abstract.
  21. Candow, D. G., Little, J. P., Chilibeck, P. D., Abeysekara, S., Zello, G. A., Kazachkov, M., Cornish, S. M., and Yu, P. H. Low-dose creatine combined with protein during resistance training in older men. Med.Sci.Sports Exerc. 2008;40:1645-1652. View abstract.
  22. Rosenfeld, J., King, R. M., Jackson, C. E., Bedlack, R. S., Barohn, R. J., Dick, A., Phillips, L. H., Chapin, J., Gelinas, D. F., and Lou, J. S. Creatine monohydrate in ALS: effects on strength, fatigue, respiratory status and ALSFRS. Amyotroph.Lateral.Scler. 2008;9:266-272. View abstract.
  23. Koenig CA, Benardot D Cody M Thompson WR. Comparison of creatine monohydrate and carbohydrate supplementation on repeated jump height performance. J Strength Cond Res. 2008;22:1081-1086. View abstract.
  24. NINDS NET-PD Investigators. A pilot clinical trial of creatine and minocycline in early Parkinson disease: 18-month results. Clin.Neuropharmacol. 2008;31:141-150. View abstract.
  25. Deacon, S. J., Vincent, E. E., Greenhaff, P. L., Fox, J., Steiner, M. C., Singh, S. J., and Morgan, M. D. Randomized controlled trial of dietary creatine as an adjunct therapy to physical training in chronic obstructive pulmonary disease. Am.J.Respir.Crit Care Med. 8-1-2008;178:233-239. View abstract.
  26. Knott, A., Koop, U., Mielke, H., Reuschlein, K., Peters, N., Muhr, G. M., Lenz, H., Wensorra, U., Jaspers, S., Kolbe, L., Raschke, T., Stab, F., Wenck, H., and Gallinat, S. A novel treatment option for photoaged skin. J.Cosmet.Dermatol. 2008;7:15-22. View abstract.
  27. Young, P., De, Jonghe P., Stogbauer, F., and Butterfass-Bahloul, T. Treatment for Charcot-Marie-Tooth disease. Cochrane.Database.Syst.Rev. 2008;:CD006052. View abstract.
  28. Sakellaris, G., Nasis, G., Kotsiou, M., Tamiolaki, M., Charissis, G., and Evangeliou, A. Prevention of traumatic headache, dizziness and fatigue with creatine administration. A pilot study. Acta Paediatr. 2008;97:31-34. View abstract.
  29. Faager, G., Soderlund, K., Skold, C. M., Rundgren, S., Tollback, A., and Jakobsson, P. Creatine supplementation and physical training in patients with COPD: a double blind, placebo-controlled study. Int J Chron.Obstruct.Pulmon.Dis 2006;1:445-453. View abstract.
  30. Gualano, B., Novaes, R. B., Artioli, G. G., Freire, T. O., Coelho, D. F., Scagliusi, F. B., Rogeri, P. S., Roschel, H., Ugrinowitsch, C., and Lancha, A. H., Jr. Effects of creatine supplementation on glucose tolerance and insulin sensitivity in sedentary healthy males undergoing aerobic training. Amino.Acids 2008;34:245-250. View abstract.
  31. Smith, C. A., Chetlin, R. D., Gutmann, L., Yeater, R. A., and Alway, S. E. Effects of exercise and creatine on myosin heavy chain isoform composition in patients with Charcot-Marie-Tooth disease. Muscle Nerve 2006;34:586-594. View abstract.
  32. Mercimek-Mahmutoglu, S., Stoeckler-Ipsiroglu, S., Adami, A., Appleton, R., Araujo, H. C., Duran, M., Ensenauer, R., Fernandez-Alvarez, E., Garcia, P., Grolik, C., Item, C. B., Leuzzi, V., Marquardt, I., Muhl, A., Saelke-Kellermann, R. A., Salomons, G. S., Schulze, A., Surtees, R., van der Knaap, M. S., Vasconcelos, R., Verhoeven, N. M., Vilarinho, L., Wilichowski, E., and Jakobs, C. GAMT deficiency: features, treatment, and outcome in an inborn error of creatine synthesis. Neurology 8-8-2006;67:480-484. View abstract.
  33. Pluim, B. M., Ferrauti, A., Broekhof, F., Deutekom, M., Gotzmann, A., Kuipers, H., and Weber, K. The effects of creatine supplementation on selected factors of tennis specific training. Br J Sports Med 2006;40:507-511. View abstract.
  34. Eckerson, J. M., Stout, J. R., Moore, G. A., Stone, N. J., Iwan, K. A., Gebauer, A. N., and Ginsberg, R. Effect of creatine phosphate supplementation on anaerobic working capacity and body weight after two and six days of loading in men and women. J Strength.Cond.Res 2005;19:756-763. View abstract.
  35. Carter, J. M., Bemben, D. A., Knehans, A. W., Bemben, M. G., and Witten, M. S. Does nutritional supplementation influence adaptability of muscle to resistance training in men aged 48 to 72 years. J Geriatr.Phys.Ther 2005;28:40-47. View abstract.
  36. Kendall, R. W., Jacquemin, G., Frost, R., and Burns, S. P. Creatine supplementation for weak muscles in persons with chronic tetraplegia: a randomized double-blind placebo-controlled crossover trial. J Spinal Cord.Med 2005;28:208-213. View abstract.
  37. Roy, B. D., de Beer, J., Harvey, D., and Tarnopolsky, M. A. Creatine monohydrate supplementation does not improve functional recovery after total knee arthroplasty. Arch Phys Med Rehabil 2005;86:1293-1298. View abstract.
  38. Fuld, J. P., Kilduff, L. P., Neder, J. A., Pitsiladis, Y., Lean, M. E., Ward, S. A., and Cotton, M. M. Creatine supplementation during pulmonary rehabilitation in chronic obstructive pulmonary disease. Thorax 2005;60:531-537. View abstract.
  39. Escolar, D. M., Buyse, G., Henricson, E., Leshner, R., Florence, J., Mayhew, J., Tesi-Rocha, C., Gorni, K., Pasquali, L., Patel, K. M., McCarter, R., Huang, J., Mayhew, T., Bertorini, T., Carlo, J., Connolly, A. M., Clemens, P. R., Goemans, N., Iannaccone, S. T., Igarashi, M., Nevo, Y., Pestronk, A., Subramony, S. H., Vedanarayanan, V. V., and Wessel, H. CINRG randomized controlled trial of creatine and glutamine in Duchenne muscular dystrophy. Ann Neurol 2005;58:151-155. View abstract.
  40. Javierre, C., Barbany, J. R., Bonjorn, V. M., Lizarraga, M. A., Ventura, J. L., and Segura, R. Creatine supplementation and performance in 6 consecutive 60 meter sprints. J Physiol Biochem 2004;60:265-271. View abstract.
  41. Theodorou, A. S., Havenetidis, K., Zanker, C. L., O'Hara, J. P., King, R. F., Hood, C., Paradisis, G., and Cooke, C. B. Effects of acute creatine loading with or without carbohydrate on repeated bouts of maximal swimming in high-performance swimmers. J Strength.Cond.Res 2005;19:265-269. View abstract.
  42. Kornblum, C., Schroder, R., Muller, K., Vorgerd, M., Eggers, J., Bogdanow, M., Papassotiropoulos, A., Fabian, K., Klockgether, T., and Zange, J. Creatine has no beneficial effect on skeletal muscle energy metabolism in patients with single mitochondrial DNA deletions: a placebo-controlled, double-blind 31P-MRS crossover study. Eur J Neurol 2005;12:300-309. View abstract.
  43. Ahmun, R. P., Tong, R. J., and Grimshaw, P. N. The effects of acute creatine supplementation on multiple sprint cycling and running performance in rugby players. J Strength.Cond.Res 2005;19:92-97. View abstract.
  44. Matsumura, T., Yokoe, M., Nakamori, M., Hattori, N., Saito, T., Nozaki, S., Fujimura, H., and Shinno, S. [A clinical trial of creatine monohydrate in muscular dystrophy patients]. Rinsho Shinkeigaku 2004;44:661-666. View abstract.
  45. Chetlin, R. D., Gutmann, L., Tarnopolsky, M. A., Ullrich, I. H., and Yeater, R. A. Resistance training exercise and creatine in patients with Charcot-Marie-Tooth disease. Muscle Nerve 2004;30:69-76. View abstract.
  46. Tarnopolsky, M. A., Mahoney, D. J., Vajsar, J., Rodriguez, C., Doherty, T. J., Roy, B. D., and Biggar, D. Creatine monohydrate enhances strength and body composition in Duchenne muscular dystrophy. Neurology 5-25-2004;62:1771-1777. View abstract.
  47. Selsby, J. T., DiSilvestro, R. A., and Devor, S. T. Mg2+-creatine chelate and a low-dose creatine supplementation regimen improve exercise performance. J Strength.Cond.Res 2004;18:311-315. View abstract.
  48. Ostojic, S. M. Creatine supplementation in young soccer players. Int.J.Sport Nutr.Exerc.Metab 2004;14:95-103. View abstract.
  49. Bohnhorst, B., Geuting, T., Peter, C. S., Dordelmann, M., Wilken, B., and Poets, C. F. Randomized, controlled trial of oral creatine supplementation (not effective) for apnea of prematurity. Pediatrics 2004;113:e303-e307. View abstract.
  50. Tyler, T. F., Nicholas, S. J., Hershman, E. B., Glace, B. W., Mullaney, M. J., and McHugh, M. P. The effect of creatine supplementation on strength recovery after anterior cruciate ligament (ACL) reconstruction: a randomized, placebo-controlled, double-blind trial. Am.J.Sports Med. 2004;32:383-388. View abstract.
  51. Kocak, S. and Karli, U. Effects of high dose oral creatine supplementation on anaerobic capacity of elite wrestlers. J.Sports Med.Phys.Fitness 2003;43:488-492. View abstract.
  52. Tarnopolsky, M., Mahoney, D., Thompson, T., Naylor, H., and Doherty, T. J. Creatine monohydrate supplementation does not increase muscle strength, lean body mass, or muscle phosphocreatine in patients with myotonic dystrophy type 1. Muscle Nerve 2004;29:51-58. View abstract.
  53. Volek, J. S., Ratamess, N. A., Rubin, M. R., Gomez, A. L., French, D. N., McGuigan, M. M., Scheett, T. P., Sharman, M. J., Hakkinen, K., and Kraemer, W. J. The effects of creatine supplementation on muscular performance and body composition responses to short-term resistance training overreaching. Eur.J.Appl.Physiol 2004;91(5-6):628-637. View abstract.
  54. Havenetidis, K. and Bourdas, D. Creatine supplementation: effects on urinary excretion and anaerobic performance. J Sports Med Phys Fitness 2003;43:347-355. View abstract.
  55. Burke, D. G., Chilibeck, P. D., Parise, G., Candow, D. G., Mahoney, D., and Tarnopolsky, M. Effect of creatine and weight training on muscle creatine and performance in vegetarians. Med.Sci.Sports Exerc. 2003;35:1946-1955. View abstract.
  56. Verbessem, P., Lemiere, J., Eijnde, B. O., Swinnen, S., Vanhees, L., Van Leemputte, M., Hespel, P., and Dom, R. Creatine supplementation in Huntington's disease: a placebo-controlled pilot trial. Neurology 10-14-2003;61:925-930. View abstract.
  57. Chwalbinska-Moneta, J. Effect of creatine supplementation on aerobic performance and anaerobic capacity in elite rowers in the course of endurance training. Int J Sport Nutr.Exerc.Metab 2003;13:173-183. View abstract.
  58. Delecluse, C., Diels, R., and Goris, M. Effect of creatine supplementation on intermittent sprint running performance in highly trained athletes. J Strength.Cond.Res 2003;17:446-454. View abstract.
  59. Lehmkuhl, M., Malone, M., Justice, B., Trone, G., Pistilli, E., Vinci, D., Haff, E. E., Kilgore, J. L., and Haff, G. G. The effects of 8 weeks of creatine monohydrate and glutamine supplementation on body composition and performance measures. J Strength.Cond.Res 2003;17:425-438. View abstract.
  60. Selsby, J. T., Beckett, K. D., Kern, M., and Devor, S. T. Swim performance following creatine supplementation in Division III athletes. J Strength.Cond.Res 2003;17:421-424. View abstract.
  61. Lambert, C. P., Archer, R. L., Carrithers, J. A., Fink, W. J., Evans, W. J., and Trappe, T. A. Influence of creatine monohydrate ingestion on muscle metabolites and intense exercise capacity in individuals with multiple sclerosis. Arch Phys Med Rehabil. 2003;84:1206-1210. View abstract.
  62. Tabrizi, S. J., Blamire, A. M., Manners, D. N., Rajagopalan, B., Styles, P., Schapira, A. H., and Warner, T. T. Creatine therapy for Huntington's disease: Clinical and MRS findings in a 1-year pilot study. Neurology 7-8-2003;61:141-142. View abstract.
  63. Louis, M., Lebacq, J., Poortmans, J. R., Belpaire-Dethiou, M. C., Devogelaer, J. P., Van Hecke, P., Goubel, F., and Francaux, M. Beneficial effects of creatine supplementation in dystrophic patients. Muscle Nerve 2003;27:604-610. View abstract.
  64. Eijnde, B. O., Van Leemputte, M., Goris, M., Labarque, V., Taes, Y., Verbessem, P., Vanhees, L., Ramaekers, M., Vanden Eynde, B., Van Schuylenbergh, R., Dom, R., Richter, E. A., and Hespel, P. Effects of creatine supplementation and exercise training on fitness in men 55-75 yr old. J Appl.Physiol 2003;95:818-828. View abstract.
  65. Brose, A., Parise, G., and Tarnopolsky, M. A. Creatine supplementation enhances isometric strength and body composition improvements following strength exercise training in older adults. J Gerontol A Biol.Sci.Med Sci. 2003;58:11-19. View abstract.
  66. Walter, M. C., Reilich, P., Lochmuller, H., Kohnen, R., Schlotter, B., Hautmann, H., Dunkl, E., Pongratz, D., and Muller-Felber, W. Creatine monohydrate in myotonic dystrophy: a double-blind, placebo-controlled clinical study. J Neurol. 2002;249:1717-1722. View abstract.
  67. Battini, R., Leuzzi, V., Carducci, C., Tosetti, M., Bianchi, M. C., Item, C. B., Stockler-Ipsiroglu, S., and Cioni, G. Creatine depletion in a new case with AGAT deficiency: clinical and genetic study in a large pedigree. Mol.Genet.Metab 2002;77:326-331. View abstract.
  68. Chang, C. T., Wu, C. H., Yang, C. W., Huang, J. Y., and Wu, M. S. Creatine monohydrate treatment alleviates muscle cramps associated with haemodialysis. Nephrol.Dial.Transplant. 2002;17:1978-1981. View abstract.
  69. Huso, M. E., Hampl, J. S., Johnston, C. S., and Swan, P. D. Creatine supplementation influences substrate utilization at rest. J Appl.Physiol 2002;93:2018-2022. View abstract.
  70. Wilder, N., Gilders, R., Hagerman, F., and Deivert, R. G. The effects of a 10-week, periodized, off-season resistance-training program and creatine supplementation among collegiate football players. J Strength.Cond.Res 2002;16:343-352. View abstract.
  71. Drory, V. E. and Gross, D. No effect of creatine on respiratory distress in amyotrophic lateral sclerosis. Amyotroph.Lateral.Scler.Other Motor Neuron Disord. 2002;3:43-46. View abstract.
  72. Gotshalk, L. A., Volek, J. S., Staron, R. S., Denegar, C. R., Hagerman, F. C., and Kraemer, W. J. Creatine supplementation improves muscular performance in older men. Med Sci.Sports Exerc. 2002;34:537-543. View abstract.
  73. Syrotuik, D. G., Game, A. B., Gillies, E. M., and Bell, G. J. Effects of creatine monohydrate supplementation during combined strength and high intensity rowing training on performance. Can J Appl.Physiol 2001;26:527-542. View abstract.
  74. Cottrell, G. T., Coast, J. R., and Herb, R. A. Effect of recovery interval on multiple-bout sprint cycling performance after acute creatine supplementation. J Strength.Cond.Res 2002;16:109-116. View abstract.
  75. Izquierdo, M., Ibanez, J., Gonzalez-Badillo, J. J., and Gorostiaga, E. M. Effects of creatine supplementation on muscle power, endurance, and sprint performance. Med Sci.Sports Exerc. 2002;34:332-343. View abstract.
  76. Vorgerd, M., Zange, J., Kley, R., Grehl, T., Husing, A., Jager, M., Muller, K., Schroder, R., Mortier, W., Fabian, K., Malin, J. P., and Luttmann, A. Effect of high-dose creatine therapy on symptoms of exercise intolerance in McArdle disease: Double-blind, placebo-controlled crossover study. Arch Neurol 2002;59:97-101. View abstract.
  77. Jacobs, P. L., Mahoney, E. T., Cohn, K. A., Sheradsky, L. F., and Green, B. A. Oral creatine supplementation enhances upper extremity work capacity in persons with cervical-level spinal cord injury. Arch Phys Med Rehabil. 2002;83:19-23. View abstract.
  78. Chrusch, M. J., Chilibeck, P. D., Chad, K. E., Davison, K. S., and Burke, D. G. Creatine supplementation combined with resistance training in older men. Med Sci.Sports Exerc. 2001;33:2111-2117. View abstract.
  79. Arciero, P. J., Hannibal, N. S., III, Nindl, B. C., Gentile, C. L., Hamed, J., and Vukovich, M. D. Comparison of creatine ingestion and resistance training on energy expenditure and limb blood flow. Metabolism 2001;50:1429-1434. View abstract.
  80. Romer, L. M., Barrington, J. P., and Jeukendrup, A. E. Effects of oral creatine supplementation on high intensity, intermittent exercise performance in competitive squash players. Int J Sports Med 2001;22:546-552. View abstract.
  81. Bemben, M. G., Tuttle, T. D., Bemben, D. A., and Knehans, A. W. Effects of creatine supplementation on isometric force-time curve characteristics. Med Sci.Sports Exerc. 2001;33:1876-1881. View abstract.
  82. Mazzini, L., Balzarini, C., Colombo, R., Mora, G., Pastore, I., De Ambrogio, R., and Caligari, M. Effects of creatine supplementation on exercise performance and muscular strength in amyotrophic lateral sclerosis: preliminary results. J Neurol.Sci. 10-15-2001;191(1-2):139-144. View abstract.
  83. Willoughby, D. S. and Rosene, J. Effects of oral creatine and resistance training on myosin heavy chain expression. Med Sci.Sports Exerc. 2001;33:1674-1681. View abstract.
  84. Bemben, M. G., Bemben, D. A., Loftiss, D. D., and Knehans, A. W. Creatine supplementation during resistance training in college football athletes. Med Sci.Sports Exerc. 2001;33:1667-1673.View abstract.
  85. Doherty, T. J., Lougheed, K., Markez, J., and Tarnopolsky, M. A. Creatine monohydrate does not increase strength in patients with hereditary neuropathy. Neurology 8-14-2001;57:559-560.View abstract.
  86. Wiroth, J. B., Bermon, S., Andrei, S., Dalloz, E., Hebuterne, X., and Dolisi, C. Effects of oral creatine supplementation on maximal pedalling performance in older adults. Eur.J Appl.Physiol 2001;84:533-539. View abstract.
  87. Jakobi, J. M., Rice, C. L., Curtin, S. V., and Marsh, G. D. Neuromuscular properties and fatigue in older men following acute creatine supplementation. Eur.J Appl.Physiol 2001;84:321-328.View abstract.
  88. Finn, J. P., Ebert, T. R., Withers, R. T., Carey, M. F., Mackay, M., Phillips, J. W., and Febbraio, M. A. Effect of creatine supplementation on metabolism and performance in humans during intermittent sprint cycling. Eur.J Appl.Physiol 2001;84:238-243. View abstract.
  89. Op 't, Eijnde B., Vergauwen, L., and Hespel, P. Creatine loading does not impact on stroke performance in tennis. Int J Sports Med 2001;22:76-80. View abstract.
  90. Bellinger, B. M., Bold, A., Wilson, G. R., Noakes, T. D., and Myburgh, K. H. Oral creatine supplementation decreases plasma markers of adenine nucleotide degradation during a 1-h cycle test. Acta Physiol Scand. 2000;170:217-224. View abstract.
  91. Klopstock, T., Querner, V., Schmidt, F., Gekeler, F., Walter, M., Hartard, M., Henning, M., Gasser, T., Pongratz, D., Straube, A., Dieterich, M., and Muller-Felber, W. A placebo-controlled crossover trial of creatine in mitochondrial diseases. Neurology 12-12-2000;55:1748-1751. View abstract.
  92. Tarnopolsky, M. A. and MacLennan, D. P. Creatine monohydrate supplementation enhances high-intensity exercise performance in males and females. Int J Sport Nutr.Exerc.Metab 2000;10:452-463. View abstract.
  93. Burke, D. G., Silver, S., Holt, L. E., Smith, Palmer T., Culligan, C. J., and Chilibeck, P. D. The effect of continuous low dose creatine supplementation on force, power, and total work. Int J Sport Nutr.Exerc.Metab 2000;10:235-244. View abstract.
  94. Shomrat, A., Weinstein, Y., and Katz, A. Effect of creatine feeding on maximal exercise performance in vegetarians. Eur.J Appl.Physiol 2000;82:321-325. View abstract.
  95. Deutekom, M., Beltman, J. G., de Ruiter, C. J., de Koning, J. J., and de Haan, A. No acute effects of short-term creatine supplementation on muscle properties and sprint performance. Eur.J Appl.Physiol 2000;82:223-229. View abstract.
  96. Volek, J. S., Duncan, N. D., Mazzetti, S. A., Staron, R. S., Putukian, M., Gomez, A. L., Pearson, D. R., Fink, W. J., and Kraemer, W. J. Performance and muscle fiber adaptations to creatine supplementation and heavy resistance training. Med Sci.Sports Exerc. 1999;31:1147-1156. View abstract.
  97. Nanto-Salonen, K., Komu, M., Lundbom, N., Heinanen, K., Alanen, A., Sipila, I., and Simell, O. Reduced brain creatine in gyrate atrophy of the choroid and retina with hyperornithinemia. Neurology 7-22-1999;53:303-307. View abstract.
  98. Urbanski, R. L., Vincent, W. J., and Yaspelkis, B. B., III. Creatine supplementation differentially affects maximal isometric strength and time to fatigue in large and small muscle groups. Int J Sport Nutr. 1999;9:136-145. View abstract.
  99. Gualano B, Ugrinowitsch C, Novaes RB, et al. Effects of creatine supplementation on renal function: a randomized, double-blind, placebo-controlled clinical trial. Eur J Appl Physiol 2008;103:33-40. View abstract.
  100. Kaptsan A, Odessky A, Osher Y, Levine J. Lack of efficacy of 5 grams daily of creatine in schizophrenia: a randomized, double-blind, placebo-controlled trial. J Clin Psychiatry 2007;68:881-4.View abstract.
  101. Shefner JM, Cudkowicz ME, Schoenfeld D, et al. A clinical trial of creatine in ALS. Neurology 2004;63:1656-61. View abstract.
  102. Chung Y, Alexanderson H, Pipitone N, et al. Creatine supplements in patients with idiopathic inflammatory myopathies who are clinically weak after conventional pharmacologic treatment: six-month, double-blind, randomized, placebo-controlled trial. Arthritis Rheum 2007;57:694-702. View abstract.
  103. Chorney JA, Cohen J. Pigmented purpuric dermatosis associated with creatine supplementation (letter). Arch Dermatol 2006;142:1662-3. View abstract.
  104. Hass CJ, Collins MA, Juncos JL. Resistance training with creatine monohydrate improves upper-body strength in patients with Parkinson disease: a randomized trial. Neurorehabil Neural Repair 2007;21:107-15. View abstract.
  105. Bender A, Koch W, Elstner M, et al. Creatine supplementation in Parkinson disease: a placebo-controlled randomized pilot trial. Neurology 2006;67:1262-4. View abstract.
  106. NINDS NET-PD Investigators. A randomized, double-blind, futility clinical trial of creatine and minocycline in early Parkinson disease. Neurology 2006;66:664-71. View abstract.
  107. Abou-Zeid LA, El-Mowafy AM. Differential recognition of resveratrol isomers by the human estrogen receptor-alpha: molecular dynamics evidence for stereoselective ligand binding. Chirality 2004;16:190-5. View abstract.
  108. Hill JO. Understanding and addressing the epidemic of obesity: An energy balance perspective. End Rev 2006;27:750-61. View abstract.
  109. Vierck JL, Icenoggle DL, Bucci L, Dodson MV. The effects of ergogenic compounds on myogenic satellite cells. Med Sci Sports Exerc 2003;35:769-76. View abstract.
  110. Van Schuylenbergh R, Van Leemputte M, Hespel P. Effects of oral creatine-pyruvate supplementation in cycling performance. Int J Sports Med 2003;24:144-50. View abstract.
  111. Stone MH, Sanborn K, Smith LL, et al. Effects of in-season (5 weeks) creatine and pyruvate supplementation on anaerobic performance and body composition in American football players. Int J Sport Nutr 1999;9:146-65. . View abstract.
  112. Kammer RT. Lone atrial fibrillation associated with creatine monohydrate supplementation. Pharmacotherapy 2005;25:762-4. View abstract.
  113. Kuklo TR, Tis JE, Moores LK, Schaefer RA. Fatal rhabdomyolysis with bilateral gluteal, thigh, and leg compartment syndrome after the Army Physical Fitness Test. A case report. Am J Sports Med 2000;28:112-6. View abstract.
  114. Robinson SJ. Acute quadriceps compartment syndrome and rhabdomyolysis in a weight lifter using high-dose creatine supplementation. J Am Board Fam Pract 2000;13:134-7. View abstract.
  115. Sandhu RS, Como JJ, Scalea TS, Betts JM. Renal failure and exercise-induced rhabdomyolysis in patients taking performance-enhancing compounds. J Trauma 2002;53:761-3. View abstract.
  116. Groeneveld GJ, Veldink JH, van der Tweel I, et al. A randomized sequential trial of creatine in amyotrophic lateral sclerosis. Ann Neurol 2003;53:437-45. . View abstract.
  117. Bosco C, Tihanyi J, Pucspk J, et al. Effect of oral creatine supplementation on jumping and running performance. Int J Sports Med 1997;18:369-72.. View abstract.
  118. Benzi G. Is there a rationale for the use of creatine either as nutritional supplementation or drug administration in humans participating in a sport? Pharmacol Res 2000;41:255-64. View abstract.
  119. Schneider-Gold C, Beck M, Wessig C, et al. Creatine monohydrate in DM2/PROMM. A double-blind placebo-controlled clinical study. Neurology 2003;60:500-2.. View abstract.
  120. Persky AM, Muller M, Derendorf H, et al. Single- and multiple-dose pharmacokinetics of oral creatine. J Clin Pharmacol 2003;43:29-37. . View abstract.
  121. Preen D, Dawson B, Goodman C, et al. Effect of creatine loading on long-term sprint exercise performance and metabolism. Med Sci Sports Exerc 2001;33:814-21. . View abstract.
  122. Green AL, Simpson EJ, Littlewood JJ, et al. Carbohydrate ingestion augments creatine retention during creatine feeding in humans. Acta Physiol Scand 1996;158:195-202. . View abstract.
  123. Jowko E, Ostaszewski P, Jank M, et al. Creatine and beta-hydroxy-beta-methylbutyrate (HMB) additively increase lean body mass and muscle strength during a weight-training program. Nutrition 2001;17:558-66.. View abstract.
  124. Anabolic Steroid Act, Public Law No. 108-358, 2004.
  125. Willer B, Stucki G, Hoppeler H, et al. Effects of creatine supplementation on muscle weakness in patients with rheumatoid arthritis. Rheumatology (Oxford) 2000;39:293-8. View abstract.
  126. Becque MD, Lochmann JD, Melrose DR. Effects of oral creatine supplementation on muscular strength and body composition. Med Sci Sports Exerc 2000;32:654-8. View abstract.
  127. Rico-Sanz J. Creatine reduces human muscle PCr and pH decrements and P(i) accumulation during low-intensity exercise. J Appl Physiol 2000;88:1181-91. View abstract.
  128. Francaux M, Demeure R, Goudemant JF, Poortmans JR. Effect of exogenous creatine supplementation on muscle PCr metabolism. Int J Sports Med 2000;21:139-45. View abstract.
  129. Mujika I, Padilla S, Ibanez J, et al. Creatine supplementation and sprint performance in soccer players. Med Sci Sports Exerc 2000;32:518-25. View abstract.
  130. Gilliam JD, Hohzorn C, Martin D, Trimble MH. Effect of oral creatine supplementation on isokinetic torque production. Med Sci Sports Exerc 2000;32:993-6. View abstract.
  131. Walter MC, Lochmuller H, Reilich P, et al. Creatine monohydrate in muscular dystrophies: A double-blind, placebo-controlled clinical study. Neurology 2000;54:1848-50. View abstract.
  132. NCAA prohibits schools from supplying creatine to students. Reuters Health 2000;Jun 13. Available at: 2000/06/06.13/20000613publ004.html (Accessed 13 June 2000).
  133. Stricker PR. Other ergogenic agents. Clin Sports Med 1998;17:283-97. View abstract.
  134. Terjung RL, Clarkson P, Eichner ER, et al. The American College of Sports Medicine Roundtable on the physiological and health effects of oral creatine supplementation. Med Sci Sports Exerc 2000;32:706-17. View abstract.
  135. Rossouw F, Kruger PE, Rossouw J. The effect of creatine monohydrate loading on maximal intermittent exercise and sport-specific strength in well trained power-lifters. Nutr Res 2000;20:505-14.
  136. Rossiter HB, Cannell ER, Jakeman PM. The effect of oral creatine supplementation on the 1000-m performance of competitive rowers. J Sports Sci 1996;14:175-9. View abstract.
  137. McKenna MJ, Morton J, Selig SE, Snow RJ. Creatine supplementation increases muscle total creatine but not maximal intermittent exercise performance. J Appl Physiol 1999;87:2244-52.View abstract.
  138. McNaughton LR, Dalton B, Tarr J. The effects of creatine supplementation on high-intensity exercise performance in elite performers. (abstract) Eur J Appl Physiol Occup Physiol 1998;78:236-40. View abstract.
  139. Kamber M, Koster M, Kreis R, et al. Creatine supplementation - part I: performance, clinical chemistry, and muscle volume. Med Sci Sports Exerc 1999;31:1763-9. View abstract.
  140. Theodorou AS, Cooke CB, King RF, et al. The effect of longer-term creatine supplementation on elite swimming performance after an acute creatine loading. J Sports Sci 1999;17:853-9.View abstract.
  141. Jones AM, Atter T, Georg KP. Oral creatine supplementation improves multiple sprint performance in elite ice-hockey players. J Sports Med Phys Fitness 1999;39:189-96. View abstract.
  142. Leenders NM, Lamb DR, Nelson TE. Creatine supplementation and swimming performance. Int J Sport Nutr 1999;9:251-62. View abstract.
  143. Snow RJ, McKenna MJ, Selig SE, et al. Effect of creatine supplementation on sprint exercise performance and muscle metabolism. (abstract) J Appl Physiol 1998;84:1667-73. View abstract.
  144. Odland LM, MacDougall JD, Tarnopolsky MA, et al. Effect of oral creatine supplementation on muscle [PCr] and short-term maximum power output. (abstract) Med Sci Sports Exerc 1997;29:216-9. View abstract.
  145. Cooke WH, Grandjean PW, Barnes WS. Effect of oral creatine supplementation on power output and fatigue during bicycle ergometry. (abstract) J Appl Physiol 1995;78:670-3. View abstract.
  146. Vanakoski J, Kosunen V, Meririnne E, Seppala T. Creatine and caffeine in anaerobic and aerobic exercise: effects on physical performance and pharmacokinetic considerations. Int J Clin Pharmacol Ther 1998;36:258-62. View abstract.
  147. Cooke WH, Barnes WS. The influence of recovery duration on high-intensity exercise performance after oral creatine supplementation. Can J Appl Physiol 1997;22:454-67. View abstract.
  148. Barnett C, Hinds M, Jenkins DG. Effects of oral creatine supplementation on multiple sprint cycle performance. Aust J Sci Med Sport 1996;28:35-9. View abstract.
  149. Prevost MC, Nelson AG, Morris GS. Creatine supplementation enhances intermittent work performance. (abstract) Res Q Exerc Sport 1997;68:233-40. View abstract.
  150. Dawson B, Cutler M, Moody A, et al. Effects of oral creatine loading on single and repeated maximal short sprints. Aust J Sci Med Sport 1995;27:56-61. View abstract.
  151. Birch R, Noble D, Greenhaff PL. The influence of dietary creatine supplementation on performance during repeated bouts of maximal isokinetic cycling in man. (abstract) Eur J Appl Physiol Occup Physiol 1994;69:268-76. View abstract.
  152. Balsom PD, Soderlund K, Sjodin B, Ekblom B. Skeletal muscle metabolism during short duration high-intensity exercise: influence of creatine supplementation. Acta Physiol Scand 1995;154:303-10. View abstract.
  153. Green AL, Hultman E, Macdonald IA, et al. Carbohydrate ingestion augments skeletal muscle creatine accumulation during creatine supplementation in humans. Am J Physiol 1996;271:E821-6. View abstract.
  154. Francaux M, Poortmans JR. Effects of training and creatine supplement on muscle strength and body mass. Eur J Appl Physiol Occup Physiol 1999;80:165-8. View abstract.
  155. Chambers DJ, Haire K, Morley N, et al. St. Thomas' Hospital cardioplegia: enhanced protection with exogenous creatine phosphate. Ann Thorac Surg 1996;61:67-75. View abstract.
  156. Juhn MS, O'Kane JW, Vinci DM. Oral creatine supplementation in male collegiate athletes: a survey of dosing habits and side effects. J Am Diet Assoc 1999;99:593-5.
  157. Harris RC, Soderlund K, Hultman E. Elevation of creatine in resting and exercised muscle of normal subjects by creatine supplementation. Clin Sci (Lond) 1992;83:367-74. View abstract.
  158. Febbraio MA, Flanagan TR, Snow RJ, et al. Effect of creatine supplementation on intramuscular TCr, metabolism and performance during intermittent, supramaximal exercise in humans. Acta Physiol Scand 1995;155:387-95. View abstract.
  159. Vandenberghe K, Van Hecke P, Van Leemputte M, et al. Phosphocreatine resynthesis is not affected by creatine loading. Med Sci Sports Exerc 1999;31:236-42. View abstract.
  160. Ingwall JS, Morales MF, Stockdale FE, Wildenthal K. Creatine: a possible stimulus skeletal cardiac muscle hypertrophy. Recent Adv Stud Cardiac Struct Metab 1975;8:467-81. View abstract.
  161. Sipila I, Rapola J, Simell O, Vannas A. Supplementary creatine as a treatment for gyrate atrophy of the choroid and retina. N Engl J Med 1981;304:867-70. View abstract.
  162. Heinanen K, Nanto-Salonen K, Komu M, et al. Creatine corrects muscle 31P spectrum in gyrate atrophy with hyperornithinaemia. Eur J Clin Invest 1999;29:1060-5. View abstract.
  163. Juhn MS. Oral creatine supplementation. Separating fact from hype. Phys Sportsmed 1999;27:47-50,53-54,56,61,89. View abstract.
  164. Williams MH, Branch JD. Creatine supplementation and exercise performance: an update. J Am Coll Nutr 1998;17:216-34. View abstract.
  165. Demant TW, Rhodes EC. Effects of creatine supplementation on exercise performance. Sports Med 1999;28:49-60. View abstract.
  166. Earnest CP, Almada AL, Mitchell TL. High-performance capillary electrophoresis-pure creatine monohydrate reduces blood lipids in men and women. Clin Sci (Colch) 1996;91:113-8. View abstract.
  167. Rawson ES, Wehnert ML, Clarkson PM. Effects of 30 days of creatine ingestion in older men. Eur J Appl Physiol Occup Physiol 1999;80:139-44. View abstract.
  168. Bermon S, Venembre P, Sachet C, et al. Effects of creatine monohydrate ingestion in sedentary and weight-trained older adults. Acta Physiol Scand 1998;164:147-55. View abstract.
  169. Rawson ES, Clarkson PM. Acute creatine supplementation in older men. Int J Sports Med 2000;21:71-5. View abstract.
  170. Mihic S, MacDonald JR, McKenzie S, Tarnopolsky MA. Acute creatine loading increases fat-free mass, but does not affect blood pressure, plasma creatinine, or CK activity in men and women. Med Sci Sports Exerc 2000;32:291-6. View abstract.
  171. Matthews RT, Ferrante RJ, Klivenyi P, et al. Creatine and cyclocreatine attenuate MPTP neurotoxicity. Exp Neurol 1999;157:142-9. View abstract.
  172. Matthews RT, Yang L, Jenkins BG, et al. Neuroprotective effects of creatine and cyclocreatine in animal models of Huntington's disease. J Neurosci 1998;18:156-63. View abstract.
  173. Klivenyi P, Ferrante RJ, Matthews RT, et al. Neuroprotective effects of creatine in a transgenic animal model of amyotrophic lateral sclerosis. Nat Med 1999;5:347-50. View abstract.
  174. Tarnopolsky MA, Roy BD, MacDonald JR. A randomized, controlled trial of creatine monohydrate in patients with mitochondrial cytopathies. Muscle Nerve 1997;20:1502-9. View abstract.
  175. Gordon A, Hultman E, Kaijser L, et al. Creatine supplementation in chronic heart failure increases skeletal muscle creatine phosphate and muscle performance. Cardiovasc Res 1995;30:413-8. View abstract.
  176. Andrews R, Greenhaff P, Curtis S, et al. The effect of dietary creatine supplementation on skeletal muscle metabolism in congestive heart failure. Eur Heart J 1998;19:617-22. View abstract.
  177. Pepping J. Creatine. Am J Health Syst Pharm 1999;56:1608-10. View abstract.
  178. Graham AS, Hatton RC. Creatine: a review of efficacy and safety. J Am Pharm Assoc (Wash) 1999;39:803-10. View abstract.
  179. Juhn MS, Tarnopolsky M. Potential side effects of oral creatine supplementation: a critical review. Clin J Sport Med 1998;8:298-304. View abstract.
  180. Poortmans JR, Francaux M. Long-term oral creatine supplementation does not impair renal function in healthy athletes. Med Sci Sports Exerc 1999;31:1108-10. View abstract.
  181. Poortmans JR, Auquier H, Renaut V, et al. Effect of short-term creatine supplementation on renal responses in men (abstract). Eur J Appl Physiol Occup Physiol 1997;76:566-7. View abstract.
  182. Pritchard NR, Kalra PA. Renal dysfunction accompanying oral creatine supplements. Lancet 1998;351:1252-3. View abstract.
  183. Vandeberghe K, Gillis N, Van Leemputte M, et al. Caffeine counteracts the ergogenic action of muscle creatine loading. J Appl Physiol 1996;80:452-7. View abstract.
  184. Mujika I, Chatard J, Lacoste L, et al. Creatine supplementation does not improve sprint performance in competitive swimmers. Med Sci Sports Exerc 1996;28:1435-41. View abstract.
  185. Burke LM, Pyne DB, Telford RD. Oral creatine supplementation does not improve sprint performance in elite swimmers. Med Sci Sports Exerc 1995;27:S146.
  186. Hultman E, Soderlund K, Timmons JA, et al. Muscle creatine loading in men. J Appl Physiol 1996;81:232-7. View abstract.
  187. Balsom PD, Soderland K, Ekblom B. Creatine in humans with special reference to creatine supplementation. Sports Med 1994;18:268-80. View abstract.
  188. Vandenberghe K, Goris M, Van Hecke P, et al. Long-term creatine intake is beneficial to muscle performance during resistance training (abstract). J Appl Physiol 1997;83:2055-63. View abstract.
  189. Kreider RB, Ferreira M, Wilson M, et al. Effects of creatine supplementation on body composition, strength, and sprint performance. (abstract) Med Sci Sports Exerc 1998;30:73-82. View abstract.
  190. Manabe S, Kurihara N, Wada O, et al. Formation of PhIP in a mixture of creatinine, phenylalanine and sugar or aldehyde by aqueous heating. Carcinogenesis 1992;13:827-830. View abstract.
  191. Laser Reutersward A, Skog K, Jagerstad M. Mutagenicity of pan-fried bovine tissues in relation to their content of creatine, creatinine, monosaccharides and free amino acids. Food Chem Toxicol 1987;25:755-62. View abstract.
  192. Lillie JW, O'Keefe M, Valinski H, et al. Cyclocreatine (1-carboxymethyl-2-iminoimidazolidine) inhibits growth of a broad spectrum of cancer cells derived from solid tumors. Cancer Res 1993;53:3172-8. View abstract.
  193. Bergnes G, Yuan W, Khandekar VS, et al. Creatine and phosphocreatine analogs: anticancer activity and enzymatic analysis. Oncol Res 1996;8:121-30. View abstract.
  194. Miller EE, Evans AE, Cohn M. Inhibition of rate of tumor growth by creatine and cyclocreatine. Proc Natl Acad Sci U S A 1993;90:3304-8. View abstract.
  195. Martin KJ, Chen SF, Clark GM, et al. Evaluation of creatine analogues as a new class of anticancer agents using freshly explanted human tumor cells. J Natl Cancer Inst 1994;86:608-13.View abstract.
  196. Ferraro S, Codella C, Palumbo F, et al. Hemodynamic effects of creatine phosphate in patients with congestive heart failure: a double-blind comparison trial versus placebo. Clin Cardiol 1996;19:699-703. View abstract.
  197. Greenhaff P. Renal dysfunction accompanying oral creatine supplements. Lancet 1998;352:233-4. View abstract.
  198. Schilling BK, Stone MH, Utter A, et al. Creatine supplementation and health variables: a retrospective study. Med Sci Sports Exerc 2001;33:183-8. View abstract.
  199. Vahedi K, Domingo V, Amarenco P, Bousser MG. Ischemic stroke in a sportsman who consumed MaHuang extract and creatine monohydrate for bodybuilding. J Neurol Neurosurg Psychiatr 2000;68:112-3. View abstract.
  200. Koshy KM, Griswold E, Schneeberger EE. Interstitial nephritis in a patient taking creatine. N Engl J Med 1999;340:814-5. View abstract.
  201. Vorgerd M, Grehl T, Jager M, et al. Creatine therapy in myophosphorylase deficiency (McArdle disease): a placebo-controlled crossover trial. Arch Neurol 2000;57:956-63. View abstract.

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