Creatine monohydrate: what the sports nutrition society concluded
Added
The ISSN position stand reviews creatine's safety and efficacy. It concludes creatine monohydrate is the most effective supplement for increasing high-intensity exercise capacity and lean mass during training. The paper notes that some researchers suggest people with existing kidney disease check with a physician first.
The result
Result: ISSN: no compelling scientific evidence of harm from short- or long-term creatine monohydrate use (up to 30 g/day for 5 years) in otherwise healthy individuals.
Note: Not medical advice. Talk to your doctor or pharmacist before starting any supplement, especially if you take medications.
Source
ISSN position stand: creatine (PMC) (opens the original source in a new tab). Check it for the latest numbers before you act.