Melanotan II (Tan Jabs): Why They're Not Worth The Risk Eruptive naevi and darkening of preexisting naevi 24 h after a single mono dose injection of melanotan II Semantic Scholar Melanotan II is the product that's been dubbed the "Barbie drug" on social media, and promises to give users a tan without the sun but it can have serious side effects including, in rare cases, MELANOTAN II (MT 2) VIAL, (10MG) High Purity Peptide Pure Bio Labs Melanotan II acetate salt CAS 121062 08 6 (non salt) Melanotan 2 Regenix Research