Some bodybuilders and athletes turn to dietary supplements to help them increase muscle size and definition. However, many bodybuilding products marketed as dietary supplements have been found to contain other ingredients that can be harmful. Use caution and talk with your health care provider before you begin taking any supplement to gain strength or muscle size.
- Many bodybuilding products marketed as dietary supplements have been found to be deceptively labeled and to contain hidden ingredients that can be harmful, such as anabolic steroids, compounds chemically similar to them, or other substances that don’t qualify as dietary ingredients.
- In April 2013, the U.S. Food and Drug Administration issued a warning to consumers to avoid products containing the stimulant dimethylamylamine (DMAA). DMAA can elevate blood pressure and lead to other problems, such as a heart attack.
- Evidence suggests that creatine (an amino acid produced by the body) supplements may be safe for short-term use in healthy adults, but the American College of Sports Medicine recommends against anyone younger than age 18 using it to enhance athletic performance.
- Some dietary supplements may have side effects and some may interact with drugs or other supplements. Some vitamins and minerals are harmful at high doses. Talk with your health care provider before using a dietary supplement to increase muscle size and strength.
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