Source comparison
PT-141 Mechanism Studies: Key Peptide Comparison
PT-141 (Bremelanotide) Melanocortin receptor agonist MC4R in hypothalamus 30–45 minutes Female HSDD, investigational for male ED Central arousal via dopamine/norepinephrine. Works independent of genital stimulation Sildenafil (Viagra) PDE5 inhibitor cGMP phosp
This comparison does not assign a generated winner or score.
- PT-141 (Bremelanotide)
- Melanocortin receptor agonist
- MC4R in hypothalamus
- 30–45 minutes
- Female HSDD, investigational for male ED
- Central arousal via dopamine/norepinephrine. Works independent of genital stimulation
- Sildenafil (Viagra)
- PDE5 inhibitor
- cGMP phosphodiesterase in penile smooth muscle
- 30–60 minutes
- Male ED only
- Peripheral vasodilation. Requires sexual stimulation to be effective
- Kisspeptin-10
- Hypothalamic neuropeptide
- KISS1R in GnRH neurons
- 60–90 minutes (IV infusion)
- Investigational for HSDD
- Increases LH/FSH via GnRH pulse. Indirect libido effect through gonadal axis
- Oxytocin (intranasal)
- Neuropeptide hormone
- Oxytocin receptors in limbic system
- 15–30 minutes
- Investigational for social bonding, arousal
- Enhances pair-bonding and trust. Does not increase spontaneous desire
- Testosterone (transdermal)
- Androgen receptor agonist
- Androgen receptors in CNS and peripheral tissue
- 2–4 weeks (chronic dosing)
- Hypogonadism, female HSDD (off-label)
- Restores baseline libido. Does not acutely trigger arousal episodes