What is Melanotan II the drug that the TGA urges consumers to avoid? Unlocking the science behind skin pigmentation Melanotan is a peptide studied for its interaction with melanin pathways the biological systems responsible for skin tone and UV response. From pigmentation signaling What Is Melanotan II Peptide? Easy Guide For Researchers Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA) What is Melanotan II, the drug that consumers are urged to avoid? MELANOTAN 1 (10mg) stimulation of melanin synthesis.