Melanotan II for Erectile Dysfunction: What the Evidence Shows and Practical Considerations When it comes to tanning peptides, there are two main options: Melanotan 1 and Melanotan 2. Melanotan 1, also called afamelanotide, is FDA approved for a rare light sensitivity condition and works Melanotan & Tanning Injections: Safe or Risky? Melanotan 2 The Tanning Peptide and my experience. Melanotan II Wikipedia Is this injectable tanning drug safe to use?