Many people who are interested in body building take creatine supplements. Some of the most popular are boron, calcium, chromium, Co enzymes, folic acid, glucosamine, omega 3's ,selenium, and vitamin E. You can find more information here: http://www.menshealth.com/men/nutrition/vitamins-supplements/the-top-10-supplements-for-men/article/e50a99edbbbd201099edbbbd2010cfe793cd