Creatine Monohydrate is a compound that occurs naturally in the body, primarily in skeletal muscle. Creatine’s function is to serve as a precursor to Adenosine Triphosphate (ATP), the form of chemical energy used by all cells.* Body stores of Creatine create a pool of readily available ATP for energy, which is necessary for fueling quick bursts of power and strength.* Studies have demonstrated that Creatine supplementation can help to maintain existing muscle tissue, support the growth and development of lean mass, and promote optimal performance during short bouts of exercise.* NOW Creatine Monohydrate has no additives or preservatives.