I’ve heard I should take “pre workout” supplement powder before exercising to improve my performance. Is this safe?

There is no need to take a pre workout supplement. It’s important to remember that the Food and Drug Administration (FDA) doesn’t regulate the production of supplements (such as vitamins, performance enhancers, pre-workouts, etc.) in the same way they regulate food and medications. This means that some supplements might contain ingredients that are harmful to your health, especially as a young adult.

Most pre workout supplements are advertised to help give you energy to improve your performance. Often they do this through ingredients such as carbohydrates and caffeine. Fast acting carbohydrates can be consumed before a work out easily and much cheaper through food such as a banana or apple sauce. Avoid complex or high-fiber carbohydrates just before a workout so that your body doesn’t have to do a lot of work digesting while you are exercising. Caffeine is not suggested for people under the age of 12, and it’s recommended that teens limit their intake.

Before taking any type of supplement talk to your health care provider (HCP) about whether or not it’s safe for you. You should also ask yourself what might be influencing your decision to take it, and who might be making money off of you if you do.


Our health guides are developed through a systematic, rigorous process to ensure accuracy, reliability, and trustworthiness. Written and reviewed by experienced healthcare clinicians from Boston Children's Hospital, a Harvard Medical School teaching hospital and consistently ranked as a top hospital by Newsweek and U.S. News & World Report, these guides combine clinical expertise, specialized knowledge, and evidence-based medicine. We also incorporate research and best practices from authoritative sources such as the CDC, NIH, PubMed, top medical journals, and UpToDate.com. Clinical specialists and subject matter experts review and edit each guide, reinforcing our commitment to high-quality, factual, scientifically accurate health information for young people.