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 Bremelanotide Nasal Spray SweetSpot Labs USA 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 Bremelanotide PT 141 Erectile Dysfunction Men Randomized Trial: What the Evidence Shows