Creatine is a supplement that is often used by bodybuilders. It is a nitrogenous organic acid, and it occurs naturally in the human body. It helps to supply energy to all cells in the body; especially the muscle cells. About ninety five percent of the human body’s total amount of creatine is located in the muscle cells. Creatine supplements give more energy to the muscles, making them able to work harder. This is a reason that bodybuilders take creatine supplements; they want to get the most out of their work out. Creatine supplements can also be taken by people who have a creatine deficiency or not enough energy. Creatine has been proven to stimulate muscle growth in physically active individuals, and has few reported side effects. Overdosing on creatine causes diarrhea, and severely overdosing on it can even cause kidney damage. If you have digestive or kidney issues, you should not take creatine supplements.