International Society of Sports Nutrition (USA, 2017–2021)
"Decades of human research show that creatine monohydrate is safe and well-tolerated for a wide range of healthy adults when consumed at recommended doses. Large reviews and long-term studies report no negative effects on kidney function in healthy populations. While creatine is not necessary for everyone, research suggests potential benefits for physically active individuals and older adults, depending on lifestyle and baseline creatine levels. As with any supplement, individuals with pre-existing medical conditions should consult a healthcare professional."
