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 PT 141 Bremelanotide Nasal Spray SweetSpot Labs USA Bremalanopeptide for Men Anti Aging Northwest 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