100% Pure Micronized Creatine Monohydrate*

In their quest to run farther, jump higher, and outlast the competition, many athletes have turned to a variety of performance-enhancing drugs and supplements. Creatine is the most popular of these substances, believed to enhance muscle mass and help athletes achieve bursts of strength. Part of the reason for creatine's popularity might be its accessibility. Creatine powder, tablets, energy bars, and drink mixes are available without a doctor's prescription at drug stores, supermarkets, nutrition stores, and over the Internet.

Although creatine is a natural substance, it hasn't been well-studied over the long term. Researchers still aren't sure what effects it might have on the body, although there is evidence that in the short term, creatinine is safe for high-intensity resistance training.