An FDA Reversal on Peptides Could Open the Market to Unsafe Drugs ProPublica Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles, Melanotan vs. Astaxanthin for Glowing Skin Frontiers The melanocortin receptors as targets for general obesity: contextualizing clinical failures and analyzing future perspectives