Can teenagers take creatine? Safety, growth, and age advice

There is no evidence that creatine stunts growth, but research in teenagers is limited and expert groups disagree. The American Academy of Pediatrics discourages performance-enhancing substances, including creatine, in young athletes, while the International Society of Sports Nutrition considers it acceptable for some older, supervised teen athletes. Any teen considering creatine should decide with a parent and a doctor, after training, food, and sleep are already in place.

By Creatine Today · Editorial policy

Is creatine safe for teenagers?

In adults, creatine monohydrate is one of the most studied supplements, with a strong safety record at normal doses. In teenagers, the picture is less complete. A 2018 review of creatine use in adolescents found that the available studies did not show serious harm, but it also stressed that research in this age group is "extremely limited." Few studies have followed young users for years.

That gap is the main reason for caution. "No evidence of harm" in a small number of short studies is not the same as proven long-term safety in a growing body. It does not mean creatine is dangerous for teens. It means the decision deserves more care than it does for an adult.

What do pediatric and sports nutrition groups say?

The two most cited positions point in different directions:

• American Academy of Pediatrics (AAP). Its 2016 clinical report on performance-enhancing substances includes legal over-the-counter supplements, and creatine is one of the most commonly used. The AAP's concerns include high rates of product contamination, an association with later anabolic steroid use, and the effect on young people's focus in sport. It notes that, for most young athletes, these substances add little beyond the large gains that come with puberty, good nutrition, and training. The AAP discourages their use in children and adolescents.
• International Society of Sports Nutrition (ISSN). Its 2017 position stand says creatine is an acceptable strategy for younger athletes who are in serious, supervised competitive training, eat a well-balanced diet, know how to use creatine properly, and do not exceed recommended doses. It also says the under-18 warning on many labels is likely unnecessary based on current safety data.

Both groups agree on more than it seems: neither recommends creatine for casual use by young teens, and both put training and diet first.

Does creatine stunt growth?

No human study has shown that creatine stunts growth or closes growth plates early. The worry seems to come from the general idea that "supplements" are like steroids. Creatine is not a hormone. It is a compound your body already makes and gets from meat and fish, and it works by increasing the energy stored in muscle cells.

Height is driven mainly by genetics, nutrition, sleep, and normal hormone changes during puberty. One real risk is indirect: some supplements sold for muscle building have been found to contain undeclared substances, including steroids. Those can affect growth and development. This is one reason product quality matters so much for teenagers.

Can a 14 or 15 year old take creatine?

For most 13–15 year olds, we would not start with creatine. At this age, strength and muscle are rising quickly because of puberty, and the gains from good training and enough food are large. A supplement adds cost and risk without solving the basics.

Most of the questions we see come from teens who want faster results in the gym. A better first step is a plan with a coach or physical education teacher, a diet with enough total energy and protein, and enough sleep every night. If creatine is still being considered, discuss it with a parent and a doctor first.

Is creatine OK for a 16 or 17 year old athlete?

For older teens in structured, competitive sport, the ISSN position may apply, but only if its conditions are met. A practical checklist:

• A parent or guardian knows and agrees.
• A doctor has been asked, especially if the teen has any kidney problem, takes medication, or has a medical condition.
• The teen trains regularly under a coach and eats enough.
• The product is plain creatine monohydrate that is third-party tested for banned substances.
• The teen sticks to the label or clinician dose, without loading phases or "extra" scoops.

Teens who compete may face drug testing. Creatine is not a banned substance, but a contaminated product can still cause a positive test. Our guide to creatine and drug tests explains this risk.

What age should you start creatine?

There is no official minimum age. Many brands put "not for use under 18" on their labels, partly for legal reasons. Adults who choose to take it usually use 3–5 g per day. For anyone under 18, the right answer depends on the person, their sport, their health, and their doctor's view rather than a birthday.

A food-first approach works at any age. Meat and fish provide some creatine along with protein and other nutrients; see foods high in creatine. Teens who eat little or no meat get almost no dietary creatine, which is one more topic worth raising with a doctor or dietitian. Our guide on creatine for vegetarians and vegans covers that.