The Potential Benefits of PT141 for Sexual Health LivvNatural PT 141 Therapy for Low Libido in Beverly Hills Jennifer R. Berman MD How PT 141 Works: The Science of Brain Based Desire Inner Balance PT 141 (Bremelanotide) is a synthetic peptide developed from Melanotan 2 (MT II). PT 141 was recently approved for the treatment of HSDD (hypoactive sexual desire disorder) in women. PT 141 is a peptide that was