Creatine has been studied extensively as a dietary supplement for many years. In fact, more than 1,000 studies have been conducted, which have shown that creatine is a top supplement for exercise performance (1Trusted Source). Almost all of them used the same form of the supplement — creatine monohydrate. What’s more, most scientists who study supplements believe that monohydrate is the best form. Here are five science-backed reasons why this form is the best.