MELANOTAN 2 5mg (1) PT 141 vs Melanotan 2: structural and functional differences Peptides Lab UK PT 141 (Bremelanotide) 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 melanotan 2 and pt 141 are often talked about in different ways, but they can be connected in how they affect how peoplethis is feel. this is educational content only. #womenover4ot that nobody