Creatine ethyl ester is also known by the names CEE, creatine ester, and cre-ester. As opposed to the monohydrate creatine supplements, the creatine in CEE supplements has been converted to an ethyl ester derivative of creatine which is broken back into creatine in the muscles after ingestion. Because of its more lipophilic nature, making it easier to be dissolved in fats, the creatine ethyl ester is said to be more efficiently absorbed by the body and to last longer as well. Creatine monohydrate is useful for building lean muscles, but is relatively inefficiently absorbed by the body from supplement. The ester compound attached to the creatine ester makes the compound more efficient at providing the same body building benefits from less supplement.