What are the mechanism of action and side effects of Melanotan 2 (afamelanotide)? Melanotan & Tanning Injections: Safe or Risky? 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 Direct Action of Leptin and Melanotan II on Melanocortin 4 Receptors in Download Scientific Diagram Clinically important side effects of Melanotan II and placebo Download Table Melanotan II an overview ScienceDirect Topics