Source comparison
What Does PT-141 Actually Do: Comparison Table
Primary Target MC4 receptors in hypothalamus PDE5 enzyme in vascular smooth muscle Androgen receptors (systemic) PT-141 is the only option targeting central desire circuits directly Onset Time 45–90 minutes subcutaneous 30–60 minutes oral Weeks to months (depo
This comparison does not assign a generated winner or score.
- Primary Target
- MC4 receptors in hypothalamus
- PDE5 enzyme in vascular smooth muscle
- Androgen receptors (systemic)
- PT-141 is the only option targeting central desire circuits directly
- Onset Time
- 45–90 minutes subcutaneous
- 30–60 minutes oral
- Weeks to months (depot formulations)
- PT-141 and sildenafil work acutely; testosterone requires sustained levels
- Effect Duration
- 6–8 hours
- 4–6 hours
- Continuous (trough-to-peak ratio dependent)
- PT-141 provides discrete dosing windows; testosterone is background modulation
- Requires Sexual Stimulus
- No. Spontaneous desire increase
- Yes. Requires mental/physical arousal
- Indirect. Modulates baseline libido
- PT-141 initiates desire independent of external cues
- Efficacy in Vascular Disease
- Unaffected. Central mechanism
- Reduced or absent
- Unaffected
- PT-141 works when blood flow is compromised
- Common Side Effects
- Nausea (40%), flushing, BP increase
- Headache, flushing, vision changes
- Acne, erythrocytosis, mood changes
- PT-141 nausea is dose-dependent and transient; sildenafil effects are vascular