There are many forms of creatine available as supplements. Begining with creatine monohydrate the oldest form of creatine. Through creatine ethyl ester, kre-allkalyn, tricreatine malate, and many others. Finishing with creatine stacks which are mixtures of many forms of creatine. All are offered in a powder form or in capsules form. Studies have shown that creatine, particularly in short-term use, can be safely and effectively used as a body-building supplement. Other studies have shown added benefits to vegetarians, such as heightened memory and cognitive function.