PT 141 Side Effects, Duration, & Benefits Invigor Medical PT 141 Side Effects: What Helps 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 neurochemical signaling involved in PT 141 (Bremelanotide): A Comprehensive Guide to Treating Sexual Dysfunction How Long Does PT 141 Last? Duration and Timing Guide Inner Balance