Imagine just wanting to be jacked and tan and you end up like this? Melanotan II is a peptide that increases the melanin in your skin and can give men a boner that What is Melanotan II the drug that the TGA urges consumers to avoid? Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian 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 1 (10 MG) Sigma Compounds Melanotan 2 10mg Particle Peptides