PT 141 Injections vs Nasal Spray: Which is Right for You? Invigor Medical PT 141 (Bremelanotide) is a peptide designed to help boost sexual desire in women. Unlike typical treatments that work on hormones, PT 141 works directly on the nervous system by activating certain PT 141 Injections Team Wellcore Double blind, placebo controlled evaluation of the safety, pharmacokinetic properties and pharmacodynamic effects of intranasal PT 141, a melanocortin receptor agonist, in healthy males and patients with mild to moderate erectile dysfunction Buy PT 141 (Bremelanotide) Therapy for Libido and Performance Boost Buy PT 141 10mg Melanocortin Peptide Neuroendocrine Pathway Research