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 Baltimore PT141 Peptide Therapy for Erectile Dysfunction PT 141 (Bremelanotide) Peptide Spray & Injectable 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