PT-141
The short answer: PT-141 is the research name for bremelanotide, a melanocortin-receptor peptide. As of October 17, 2026 it is FDA-approved as Vyleesi for one use: low sexual desire in premenopausal women. Products sold online as PT-141 for other uses are not the approved drug.
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Based on public sources; we cannot guarantee it is correct. Not medical advice. A doctor should prescribe and confirm. Full disclaimer
What is PT-141?
Melanocortin peptide approved for low sexual desire in some women. Full section still to be written.
What is PT-141 claimed to do, and what does the evidence show?
| Use | Claimed | Shown | Grade |
|---|---|---|---|
| Low sexual desire in premenopausal women | Raises sexual desire | Approved by the FDA for this use only.[1] | Approved |
What are the known risks and side effects of PT-141?
The approved label lists the known side effects and warnings. We link to it rather than restate it.
- People who are pregnant, trying to get pregnant or breastfeeding. There is no human data in pregnancy.
- Anyone under 18. It has not been studied in young people.
- Tested athletes and service members. Check with USADA or your service's rules first. A positive test counts whatever the label said.
- People taking prescription medicines. Interactions have not been studied. Bring the product label to your clinician.
- Swelling of the face, lips or throat, trouble breathing, chest pain, a racing heart or fainting. Call 911.
- Redness spreading from an injection site, warmth, pus or a fever. Get same-day care.
- Unsure what you took or whether a reaction is serious: Poison Control 1-800-222-1222 (free, 24 hours).
- Thoughts of harming yourself: call or text 988.
Is PT-141 legal?
Approved as Vyleesi for hypoactive sexual desire disorder in premenopausal women only.[1]
Every status change for PT-141 is logged with its date and source in the regulatory tracker entry for PT-141.
Is PT-141 banned in sport?
WADA status not yet checked against the List. Anti-doping rules work on strict liability: a positive test counts whatever the label said.
What don't we know about PT-141?
What should you tell your doctor if you're using PT-141?
Tell them exactly what you took, for how long, and where it came from, and bring the label. These questions can help the conversation:
- Is there an approved treatment for my goal that has been tested in people?
- What should I watch for, and which symptoms mean I should stop and call you?
- Could it interact with the medicines I already take?
- DailyMed / US Food and Drug Administration. Vyleesi (bremelanotide) prescribing information .