What is Melanotan II, the drug that consumers are urged to avoid? Using Melanotan to Prevent Polymorphous Light Eruption aka SUN POISONING Natural Kaos 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 longer lasting than The Truth About Melanotan: Tanning Peptide or More? Melanotan II 10mg Amino USA Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA)