Slide 11 of 18
Long term supplementation and potential helath risks has not been determined. Research is currently being conducted in this area.
A very good review of exercise performance and creating use can be found in an article by Mel Williams, and J. David Branch.
Williams, M., and J.D. Branch. (1998). Creatine supplementation and exercise performance: an update. Journal of the American College of Nutrition, Vol. 17 No. 3, 216-234.