Creatine Description: Natural Sport Creatine Monohydrate capsules are easily and conveniently taken with water or other beverages. Using a creatine supplement as a part of a strength training program gives you a head start on your strength goals. Creatine occurs naturally in the body, with the largest supply in skeletal muscle. Smaller amounts of creatine are found in many high protein foods like beef, chicken and fish. Creatine's primary identified function in the body is as part of creatine phosphate, a phosphate donor for ATP, the body's energy.