What is Melanotan II the drug that the TGA urges consumers to avoid? Dangerous' tanning products promoted by influencers BBC News Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Targeting melanocortin receptors: an approach to treat weight disorders and sexual dysfunction Nature Reviews Drug Discovery Emerging Threat: Melanotan, Repackaging, and Online Sales