Melanotan II (Tan Jabs): Why They're Not Worth The Risk PDF) Melanocortin receptor agonists, penile erection, and sexual motivation: Human studies Melanotan II Melanotan What It Is and Its Relation to Skin Cancer Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas Here's the part nobody explains when they're selling you the "Barbie drug.", , Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to