While there are dozens of different types of creatine, such as creatine hydrochloride (used for its high water solubility), creatine malate (creatine combined with malic acid which can have positive effects on stamina), or even multi-component creatine which contains a variety of creatine forms for effects such as increased absorption and serving utilization, creatine monohydrate – consisting essentially of pure creatine and water - is the most studied and popular kind of creatine.