PT-141, also known by its brand name Bremelanotide, is a synthetic peptide developed to treat sexual dysfunction. It is a melanocortin receptor agonist, originally derived from the peptide hormone Melanotan II.
How It Works
PT-141 acts on the melanocortin receptors in the brain, particularly the MC4R receptor, which is involved in sexual arousal. Unlike drugs like Viagra or Cialis that work on the vascular system to increase blood flow, PT-141 directly influences the central nervous system, enhancing libido and sexual desire.
Uses and Benefits
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Increased Sexual Desire: Especially effective for both men and women with low libido.
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Treatment for Erectile Dysfunction (ED): Helps men who do not respond to traditional ED medications.
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Female Sexual Arousal Disorder (FSAD): Approved in the U.S. for premenopausal women under the name Vyleesi.
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Rapid Onset: Effects are often felt within 30 to 60 minutes after administration.
Dosage and Administration
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Typically administered via subcutaneous injection, usually into the thigh or abdomen.
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Common dose: 1.75 mg, taken about 45 minutes to an hour before sexual activity.
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Not meant for daily use — typically recommended no more than 8 times per month.
Possible Side Effects
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Nausea
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Flushing
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Headache
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Injection site reactions
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Increased blood pressure (temporary)
Legality and Availability
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FDA-approved as Vyleesi for women with hypoactive sexual desire disorder (HSDD).
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Available by prescription in some countries, or through research peptide suppliers for experimental use.




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