Science in Sport's Pure Creatine monohydrate powder is a muscle building supplement for athletes. It is especially useful for vegetarian athletes as they obtain no or very little creatine from their diet. Creatine is a naturally occurring protein and is present in a normal diet, especially in red meat. It has been shown to increase power by between 5-7% and is of greatest benefit when repeated bursts of energy are required (e.g Football, Rugby, Motocross, Sprinting etc)