100% Pure Creatine Monohydrate! Muscle size; Power/strength; Energy. Creatine plays an important role in the transfer of energy. Creatine is naturally occurring and helps the body recycle it's supply of ATP which is important for energy, strength, and endurance output. Over 95% of the creatine in the body is believed to be in the muscle. Creatine supplementation may increase the total creatine pool within the muscle therefore having a positive influence of weight and endurance training. Complete Creatine Powder contains no fillers or additives.