Is Creatine Safe for Kids? What Research Says About Teens, Younger Athletes, and Dosing

Creatine was once relegated to bodybuilder culture, but it's now a household name, with research backing a ton of benefits for muscle mass, strength, power, brain function, and bone density. With that rise has come a growing number of teens and tweens who are curious about it, and plenty of parents wondering whether it's safe for their kids to take.

Research points to creatine as being well tolerated in healthy adolescents at standard doses, with no serious side effects reported in the studies done so far. It's less clear on younger kids, infants, or toddlers. Dosing and protocols can look a bit different for young people, so keep reading for more info on that, plus the benefits and what to look for in a quality creatine product if you decide to give it a go (with your pediatrician's blessing).

Is Creatine Safe for Teens?

For adolescents, creatine has one of the better safety records in sports nutrition. A systematic review of 13 adolescent studies covering 268 participants found no consistent safety concerns when creatine was used at standard doses. A more recent systematic review of teen creatine use looked at kidney, liver, and cardiometabolic outcomes and reported no serious adverse events and no patterns of harm in the short-term studies available.

Rachel MacPherson is a Certified Strength and Conditioning Specialist, Certified Personal Trainer, Nutrition Coach, and health writer with over a decade of experience helping people build strength and confidence.

This article was reviewed by Rosie Borchert, NASM-CPT, for accuracy.

The main limitation is that very few of these trials were specifically designed to test safety, and follow-up periods tend to be short. So while the evidence is reassuring, it's not as airtight as the data we have for adults.

Dr. Darren Candow, Director of the Aging Muscle and Bone Health Laboratory at the University of Regina and a leading creatine researcher, says the research points in the same direction. He points out that current studies suggest creatine can be used by teens at recommended doses. Reviews have linked it to gains in balance, agility, body composition, and muscle development in this age group. Most experts still recommend that any teen who wants to start should check in with their pediatrician first, especially if they have underlying health conditions or take medication.

Can Kids Take Creatine?

The data on younger children is thinner than the teen data, but what we have is mostly reassuring in medical studies.

In one study, children with juvenile dermatomyositis took creatine for 12 weeks at 0.1 grams per kilogram of body weight per day. Researchers found no change in kidney function and no reported side effects. A similar study in children with childhood-onset lupus found the same pattern.

That said, most pediatric creatine studies have looked at teenagers or children with specific medical conditions, not healthy elementary-aged kids. Younger children who compete in sports should talk with their doctor before using creatine, because the evidence is still limited.

For infants and toddlers, there is no solid human safety data yet, so creatine is not recommended for that age group. Candow says early infant research is starting in overseas labs, but for now, it is something to watch, not something to use.

Benefits of Creatine for Kids

Creatine helps muscles refill their phosphocreatine stores. This is key during short, hard efforts like sprinting, lifting, and jumping, because phosphocreatine helps the body quickly make more ATP, the fuel muscles use for fast bursts of work.

In young athletes, creatine has been linked to better repeated sprint performance, higher power output, and improved anaerobic capacity. In other words, it may help teens do more hard efforts before they start to get fatigued, which is similar to what research shows for adults.

Candow also notes some research suggests kids could benefit from getting at least 1 gram of creatine per day to support normal muscle and bone development. Over time, creatine may also help with lean mass and bone density, especially if they do resistance training.

One newer finding is about sleep. In a study from Candow’s lab, young female athletes who took 5 grams of creatine per day slept about 1 hour longer on training days than those who took a placebo. Candow’s theory is that creatine may help the brain handle the energy demands of hard training, which could lead to deeper recovery afterward.

That sleep result still needs to be tested in male athletes and repeated in more studies, but it is an interesting signal for a supplement already known for helping with short-burst athletic performance.

How to Start Taking Creatine

Most teens could start at the same 3 to 5 grams of creatine per day that adults do, taken daily with a meal. Younger kids, with the go ahead from their pediatrician, can start lower at around 1 to 3 grams per day. A loading phase isn't really necessary, just be consistent with it so muscle creatine stores get saturated over a few weeks.

Timing is not that important, so take it whenever you're most likely to remember, such as at breakfast, or in a post-workout shake. Purist's Creatine Plus is easy to add to a daily routine because it's pre-measured and third-party tested.

What to Look for in the Best Creatine for Teens

Stick with creatine monohydrate, which is the form backed by the most research. Look for products that are third-party tested through programs like NSF Certified for Sport or Informed Sport, especially if your teen competes in school or club sports where banned substances are a concern.

Skip gummies and other novelty forms, which recent testing has shown can be inconsistent in actual creatine content. A powder or capsule from a reputable brand is the best way to go for purity and effectiveness.

Takeaway

Based on the studies so far, creatine appears safe and well tolerated in healthy teens when used at recommended doses. For young athletes, the upside may include better strength, more power, improved performance, and possibly longer sleep on training days.

For younger kids, there's less solid evidence. The data we do have is mostly reassuring, but much of it comes from clinical studies in children with specific medical conditions, not healthy elementary aged kids. The safest bet is to talk with a pediatrician before adding creatine to a child or teen’s routine.

Rachel MacPherson is a Certified Strength and Conditioning Specialist, Certified Personal Trainer, Nutrition Coach, and health writer with over a decade of experience helping people build strength and confidence.

This article was reviewed by Rosie Borchert, NASM-CPT, for accuracy.