Melanotan II Erectile Dysfunction Studies: What Early Research Shows and Practical Realities Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and Patient One MediNutritionals V TrustScore 8.6 10 SuppCo Hepatocyte vitamin D receptor regulates lipid metabolism and mediates experimental diet induced steatosis Journal of Hepatology Melanotan II (Tan Jabs): Why They're Not Worth The Risk