PT-141
Also known as: Bremelanotide · Vyleesi
PT-141 is a prescription medication or prescription-only peptide topic. Use this page to understand what it is used for, what side effects to ask about, and how it fits into a clinician-guided plan.
Robust Phase 3 data supporting approval for HSDD. FDA approval gives it the strongest human evidence base of any sexual health peptide. Off-label male use has supporting clinical data but no formal approval.
What to know before you go deeper
Melanocortin receptor agonist. Unlike PDE5 inhibitors (Viagra), PT-141 acts centrally through the nervous system rather than the vascular system. Works on desire and arousal pathways in the brain.
Approval status: FDA Approved. It still requires the right indication, prescription, and follow-up.
Low libido in women (FDA-approved), Erectile dysfunction in men (off-label), GLP-1-associated sexual dysfunction.
What evidence applies to my situation, what monitoring is needed, and what safer first steps should I try?
Why People Ask About PT-141
- Low libido in women (FDA-approved)
- Erectile dysfunction in men (off-label)
- GLP-1-associated sexual dysfunction
- Arousal and desire enhancement
Questions to Bring Up
FDA-approved prescription use has label instructions and contraindications. Off-label use should be handled by a licensed clinician.
Dosing, sourcing, and suitability questions belong with a licensed clinician who can review your history, labs, medications, and goals.
Known Side Effects
- Nausea (most common)
- Flushing
- Headache
- Transient blood pressure increase
- Injection site reactions
Important Safety Notes
Prescription required for Vyleesi
Do not use with nitrates — risk of hypotension
Blood pressure increase is transient (1–3 hours) but monitor if hypertensive
GLP-1 users report sexual dysfunction as a side effect — PT-141 directly addresses this
What Is Approved?
FDA-approved as Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women. Also widely used off-label in men for erectile dysfunction.
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