Creatine Monohydrate Pure Powder, 21.2 oz, NOW FoodsNOW Creatine Powder 100% Pure ATP Energizer. Vegetarian Product. Creatine Monohydrate is a naturally occurring compound found in the human body and obtained in the diet primarily from meat and fish. Creatine is a popular supplement among active individuals because of its ability to serve as an energy reservoir, especially during intense physical exertion. During short intense bursts of activity, the body breaks down adenosine triphosphate (ATP) into