Overview
PT-141, or Bremelanotide, is a synthetic peptide derived from Melanotan II but without the tanning effect. Originally researched as a sunless tanning agent, it was found to have significant effects on sexual arousal. It is now approved for treating hypoactive sexual desire disorder (HSDD) in premenopausal women.
Mechanism of Action
PT-141 acts as a melanocortin receptor agonist, specifically targeting MC1R and MC4R receptors in the brain. By binding to these receptors, it influences neural pathways associated with sexual desire and arousal. Unlike Viagra, which affects blood flow, PT-141 directly impacts sexual motivation.
Key Benefits
- Increased sexual desire in women with HSDD
- May help with erectile dysfunction in men
- Does not require direct stimulation to take effect
Research & Indications
Clinical trials have demonstrated PT-141's efficacy in treating HSDD in women. Research has also explored its potential for treating erectile dysfunction in men. Studies suggest that PT-141 can improve sexual satisfaction and reduce distress associated with low sexual desire.
Dosing Protocols
Disclaimer: The following dosing information is for research purposes only and not medical advice. Consult with a healthcare professional before using PT-141.
| Goal | Dose | Frequency | Route |
|---|---|---|---|
| Treating HSDD | 1.75 mg | As needed, at least 45 minutes before anticipated sexual activity | Subcutaneous injection |
Some users may start with a lower dose (e.g. 1mg) to assess tolerance.
Supplies Needed
For a typical protocol:
- Peptide Vials: As needed based on frequency of use, typically 1-2 vials of 10mg each per month
- Insulin Syringes (U-100): Sufficient quantity for subcutaneous injections
- Bacteriostatic Water: 1-2 × 10mL bottles for reconstitution
- Alcohol Swabs: One for vial + one for injection site per injection
Side Effects & Safety
Common side effects include nausea, flushing, headache, and changes in blood pressure. Less common side effects may include hyperpigmentation. PT-141 is contraindicated in individuals with uncontrolled hypertension or cardiovascular disease. It is also not recommended for use during pregnancy or breastfeeding.
Storage & Handling
Lyophilized PT-141 should be stored in a refrigerator at 2-8°C. Once reconstituted with bacteriostatic water, it should be used within a few weeks and kept refrigerated.