Creatine Types What’s creatine? Creatine is an amino acid derivative constructed from arginine, glycine and methionine t is produced naturally by the body in the kidneys, liver, and pancreas at a rate of about 1-2 grams/day The uptake of creatine into muscle cells is an active process. 90-95% of creatine in the body is found in muscle. Creatine is degraded into creatinine and excreted in the urine at a rate of around 2 grams/day. 1)Creatine monohydrate 2)Creatine hcl creatine that is molecularly bound with hydrochloric acid to enhance its solubility and overall absorption rates. This means that it will be broken down quicker in your body and more easily absorbed by your muscle cells. As it is more quickly absorbed, water retention is not a concern and by absorbing faster into your bloodstream, side effects are reduced.