Peptide for Erectile Dysfunction: A Practical Look at PT 141 and Similar Options Melanotan II acetate salt , Package: 5mg , Laibo Chem orionprodutoscientificos Melanotan II Cyclic MSH Analog Research Peptide Canadian Peptides PT 141 (Bremelanotide): How It Works For Sexual Arousal PT 141 is discussed for sexual dysfunction in both men and women. Unlike blood flow focused approaches, it works centrally by modulating neurochemical signaling involved in