Description
PT-141
Overview: PT-141 is the research name for bremelanotide, a synthetic peptide and melanocortin receptor agonist investigated for its effects on sexual function. It was approved by the U.S. FDA in 2019 under the brand name VYLEESI® for acquired, generalized hypoactive sexual desire disorder (HSDD) in premenopausal women.
How It Works
Bremelanotide acts centrally on melanocortin receptors in the brain—especially the MC4R receptor subtype—to influence pathways that regulate sexual desire and arousal.
Onset of Action
Effects generally begin within ~45 minutes of administration, with peak concentrations around 1 hour. Both desired effects and side effects typically occur shortly after dosing and are usually transient.
Reported Side Effects
- Nausea (most common; sometimes severe enough to require antiemetics).
- Flushing and headache.
- Injection-site reactions.
- Temporary increases in blood pressure with mild decreases in heart rate.
Research Use Only: PT-141 is offered strictly for laboratory and research purposes. It is not approved for human consumption, medical, or veterinary use.
Product Specifications
- Form: Lyophilized powder
- Purity: ≥99% (HPLC)
- Quantity: 10 mg
- Molecular Weight: 1,025.2 g/mol
- CAS Number: 189691-06-3
- Solubility: Soluble in aqueous solutions
- Characterization: HPLC, Mass Spectrometry
- Testing: Third-party verified (COA available)
Storage and Handling
Store at −20 °C (−4 °F) or below. Store in the original vial, sealed and protected from light and moisture until use. Avoid repeated freeze-thaw cycles. Shelf life up to 24 months when stored lyophilized.
Disclaimer, Intended Use & Terms of Sale
All content and information provided are for educational and research reference purposes only. This product and its associated data have not been evaluated by the U.S. Food and Drug Administration, and no claims are made regarding the diagnosis, treatment, cure, or prevention of any disease. No representations or warranties are made regarding safety, effectiveness, or outcomes.
This product is intended strictly for in vitro laboratory research use only and is not for clinical use. It is not approved for human or animal administration and must not be used in food, dietary supplements, pharmaceuticals, cosmetics, or any consumer applications.
By purchasing from Alpha One Nutrition, the buyer affirms that they are a qualified researcher or institution with the appropriate training and facilities to handle research compounds in compliance with all applicable laws and regulations. All sales are final.





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