Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian Melanotan II (Tan Jabs): Why They're Not Worth The Risk 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 Melanotan II Erectile Dysfunction Studies: What Early Research Shows and Practical Realities Clinically important side effects of Melanotan II and placebo Download Table Melanotan What It Is and Its Relation to Skin Cancer