GAT Creatine Monohydrate 1000 is HPLC-Certified 99.9% pure. No fillers are ever used; the only ingredient is Pure Creatine Monohydrate. Creatine Monohydrate is a naturally occurring metabolite found in muscle tissue. Creatine acts as a powerful ergonomic aid playing an essential role in energizing muscle tissue and enhancing athletic performance. Creatine may increase strength gains by helping to increase muscle torque, improve endurance and delay fatigue.