PURE Creatine is just what the name says: A pure source of high quality non-GMO creatine monohydrate. Creatine is used by the body to increase ATP production to fuel muscle energy. Creatine Monohydrate has been used safely and effectively by athletes for decades. In fact, nearly all of the safety and efficacy research data on creatine was produced from the studies done with Creatine Monohydrate. If your looking for a pure source of muscle energy, then PURE Creatine is where you find it.