PT 141 Nasal Spray vs. Injection Comprehensive Comparison How PT 141 Bremelanotide Helps? Particle Peptides PARTICLE, s. r. o. PT 141 10mg Research Peptide 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 In the 1990s, researchers at the University of Arizona were testing Melanotan II as a tanning agent. During clinical trials, they noticed something unexpected: the compound was causing spontaneous erections in male