Bremelanotide PT 141 Erectile Dysfunction Men Randomized Trial: What the Evidence Shows Bremelanotide Erectile Dysfunction: What Men Should Know About PT 141 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 PT 141, scientifically referred to as Bremelanotide, is a synthetic peptide developed through extensive structural modification of the naturally occurring alpha melanocyte stimulating hormone (a MSH). This peptide has gained considerable interest