Source comparison
PT‑141 vs PDE‑5 Inhibitors
The table below compares PT‑141 with popular PDE‑5 inhibitors like sildenafil (Viagra) and tadalafil (Cialis). Understanding these differences helps you and your clinician choose the right option. Primary action Stimulates melanocortin receptors in the brain;
This comparison does not assign a generated winner or score.
- The table below compares PT‑141 with popular PDE‑5 inhibitors like sildenafil (Viagra) and tadalafil (Cialis). Understanding these differences helps you and your clinician choose the right option.
- Primary action
- Stimulates melanocortin receptors in the brain; boosts dopamine and nitric oxide
- Blocks the PDE-5 enzyme to increase blood flow to the penis
- Effect on desire
- Increases sexual desire and arousal in both women and men
- Does not enhance desire; works only when there is sexual stimulation
- Onset of action
- 45 min for injection; 15–30 min for intranasal form
- 30–60 min depending on the drug
- Duration
- Half-life ~2.7 hours; effects may last up to 8 hours
- Varies: sildenafil 4 h, tadalafil up to 36 h
- Use in women
- FDA-approved for hypoactive sexual desire disorder
- Not approved for women
- Need for sexual stimulus
- Not required; can provoke arousal on its own
- Required; works only during sexual stimulation
- Common side effects
- Nausea, flushing, injection site reactions, headache, transient blood pressure increase
- Headache, flushing, nasal congestion, vision changes
- Contraindications
- Uncontrolled hypertension, cardiovascular disease, pregnancy, and breastfeeding
- Recent nitrate use, severe heart disease, hypotension
- Route
- Subcutaneous injection or intranasal spray
- Oral pill