Guide

Pooled human trial data show creatine monohydrate is well tolerated in healthy adults at standard doses.

Creatine appears safe for many healthy teens in studied doses, yet a doctor should review diet, kidneys, training, and medicines first.

Creatine monohydrate may be okay for some older teens in hard training, but a doctor should clear it before use.

Creatine can be safe for many healthy older adults when the dose is modest, fluids stay steady, and kidney issues are checked first.

Most adults who use creatine monohydrate stay within 3 to 5 grams per day after any loading phase.

Human data are too thin to call creatine a routine choice during pregnancy or nursing, so most clinicians stay cautious.

Yes, creatine is usually low-risk for healthy teens, but health history, product quality, dose, and training habits change the answer.

Most healthy adults do well with 3 to 5 grams of creatine monohydrate per day, with an optional short loading phase.

Creatine works best when you take 3 to 5 grams each day; timing near training can help routine, but steady use matters more.

Most plant foods have little to no creatine, so vegetarians do best with protein-rich staples or a creatine monohydrate supplement.