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Nutrition.gov
U.S. Department of Agriculture
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  3. Dietary Supplements
  4. Dietary Supplements for Athletes

Dietary Supplements for Athletes

Ergogenic Aids
USDA, National Agricultural Library, Food and Nutrition Information Center

Learn about potential dangers of ergogenic aids, substances that are claimed to help enhance energy utilization and performance in the body. 

MedlinePlus: Creatine
HHS, National Institutes of Health, National Library of Medicine

Learn about creatine, including what it is, use among athletes, interactions, safety concerns, and more. Also available in Spanish.

MedlinePlus: Caffeine
HHS, National Institutes of Health, National Library of Medicine

Learn about caffeine, including what it is, how it effects users, how much is too much, and why it can cause dehydration - especially in athletes. Also available in Spanish.

MedlinePlus: Anabolic Steroids
HHS, National Institutes of Health, National Library of Medicine

Learn about anabolic steroids, including what they are, use among athletes, interactions, safety concerns, and more. Also available in Spanish.

DrugFacts: Anabolic Steroids
HHS, National Institutes of Health, National Institute on Drug Abuse

Learn about anabolic steroid use among athletes and the potential health risks associated with it. Also available in Spanish.