Source comparison
PT-141 vs Hormone Therapy vs PDE5 Inhibitors: HSDD Treatment Comparison
The following table contrasts PT-141 with the two other pharmacological approaches to low sexual desire in women. Each works through a different mechanism. Choosing the right intervention depends on the underlying cause of desire loss. PT-141 (bremelanotide) M
This comparison does not assign a generated winner or score.
- The following table contrasts PT-141 with the two other pharmacological approaches to low sexual desire in women. Each works through a different mechanism. Choosing the right intervention depends on the underlying cause of desire loss.
- PT-141 (bremelanotide)
- Melanocortin-4 receptor agonist; activates hypothalamic dopamine pathways
- Hypoactive sexual desire disorder (HSDD) in premenopausal women
- 45–60 minutes
- 6–8 hours
- 60% report meaningful improvement
- Works centrally to restore desire signaling. Most effective when low libido exists despite normal hormone levels
- Testosterone therapy (transdermal)
- Androgen receptor activation; increases free testosterone
- Postmenopausal HSDD with documented low testosterone
- 2–4 weeks
- Continuous (with daily application)
- 50–55% in postmenopausal women; weaker evidence in premenopausal cohorts
- Effective when desire loss correlates with measured androgen deficiency. Less effective when testosterone is normal
- Flibanserin (Addyi)
- Serotonin 5-HT1A agonist / 5-HT2A antagonist
- Premenopausal HSDD (daily oral medication)
- 4–8 weeks
- Continuous (with daily dosing)
- 40–45% report ≥1 additional satisfying sexual event per month
- Requires daily adherence and works slowly. Effect is modest and takes weeks to manifest
- PDE5 inhibitors (sildenafil, tadalafil)
- Increases genital blood flow via nitric oxide pathway
- Arousal disorder (not desire disorder)
- 30–60 minutes
- 4–6 hours (sildenafil) / 24–36 hours (tadalafil)
- 15–20% in HSDD (weak evidence)
- Addresses genital blood flow, not central desire. Ineffective when the problem is lack of motivation rather than physical arousal