Creatine is a natural compound produced in the body (liver, kidneys, pancreas) and consumed through protein-rich foods like red meat and fish. It acts as a rapid energy source for muscles during high-intensity exercise by replenishing adenosine triphosphate (ATP). It is widely used as a safe, effective supplement to increase muscle strength, power, and size. MAN PLUS Creatine works primarily by giving your body's muscles energy and strength, and helps to replenish your energy stores during high-intensity activities. It plays a crucial role in producing adenosine triphosphate (ATP), which is your body's primary form of energy.