Creatine is a naturally occurring compound found in small amounts in certain foods and produced by the body, primarily in the liver, kidneys, and pancreas. It plays a crucial role in supplying energy to cells, particularly muscle cells, during high-intensity, short-duration activities like weightlifting or sprinting.

As a dietary supplement, creatine is widely used by athletes and fitness enthusiasts to enhance athletic performance, increase muscle mass, and improve strength. Creatine supplementation is typically done through creatine monohydrate, the most common and well-researched form.