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PT-141

Also known as: Bremelanotide, Vyleesi

Sexual HealthHormone Optimization
FDA Approved

Primary recreational use: Sexual enhancement

What is PT-141?

PT-141, also known as Bremelanotide, is an FDA-approved synthetic peptide acting as a melanocortin receptor agonist. It was derived from Melanotan II and primarily targets sexual dysfunction, particularly hypoactive sexual desire disorder (HSDD) in premenopausal women. Approved for use as needed, PT-141 is administered via subcutaneous injection and works through central pathways affecting desire and arousal. Users should be aware of side effects such as nausea and potential blood pressure changes.

Primary Benefits

Effective for hypoactive sexual desire disorder. Improves female and male sexual arousal. Alternative option for erectile dysfunction.

How It Works

PT-141 binds to melanocortin receptors, particularly MC3R and MC4R in the central nervous system, activating pathways that influence sexual arousal. This action stems from increased dopaminergic activity in brain regions like the hypothalamus, bypassing the need for peripheral blood flow enhancement typical of PDE5 inhibitors.

Safety Tips

Precautions reported in community discussions and literature. This is not a complete list.

  • 1.DON'T exceed the recommended maximum of 8 doses per month.
  • 2.DON'T use if you have uncontrolled hypertension or severe cardiovascular disease.
  • 3.DON'T inject without ensuring the solution is clear and properly reconstituted.
  • 4.DON'T mix with alcohol to avoid blood pressure issues.
  • 5.DON'T share needles or autoinjectors.

Who Should NOT Use

  • Uncontrolled hypertension
  • Severe cardiovascular disease

Use Contexts

Different purposes have different protocols, dosing, and considerations

✓Approved Medical

Hypoactive Sexual Desire Disorder (HSDD) in women

strong evidence

PT-141 is approved for treating hypoactive sexual desire disorder in premenopausal women, enhancing sexual desire and reducing distress about low desire.

Evidence: Approved for HSDD with strong evidence from Phase III clinical trials showing significant improvements in sexual desire.

The following are ranges reported in published literature and community discussions. These are NOT recommendations or medical advice.

Reported Range
1.75-1.75 mg
Reported Frequency
as needed
Reported Cycle
1-1 days
Reported Route
Subcutaneous

Timing: 45-60 minutes before activity

Pharmacokinetics

Half-Life
2.7 hours
Time to Peak
45-60 minutes
Clearance
~13.5 hours

Reported Side Effects

This is not a complete list. Other side effects may occur.

Common
Nauseavery common (>10%)
Facial flushingcommon (1-10%)
Headachecommon (1-10%)
Serious / Rare
  • Transient blood pressure increase
Injection-Specific Warnings
  • Injection site reactions

Storage

Temperature
2-8°C (refrigerated)
Reconstituted
Store reconstituted solution in refrigerator, use within 30 days
Shelf Life
30 days after reconstitution
Light Sensitive
No

Harm Reduction Information

Quality Concerns

  • Potential for contamination or impurities in non-pharmaceutical sources
  • Mislabeled concentration in compounding pharmacies

Safety Tips

  • Use sterile technique for injections.
  • Ensure proper storage in refrigeration.
  • Start with the lowest effective dose to assess tolerance.
  • Rotate injection sites to minimize local reactions.
  • Avoid alcohol when using PT-141.

Warning Signs to Stop

  • Severe nausea or vomiting
  • Significant blood pressure changes
  • Severe headache or migraine symptoms

Seek Medical Help Immediately If

  • Seek immediate help if experiencing chest pain or severe cardiovascular symptoms after use.

Frequently Asked Questions

Common questions about PT-141

How long until I see effects?

PT-141 typically takes 45-60 minutes to begin working, making it suitable for on-demand use before planned sexual activity.

What time of day should I take it?

PT-141 can be taken at any time, but should be administered 45-60 minutes before anticipated sexual activity.

How can I minimize side effects?

To minimize side effects with PT-141, take anti-nausea medication if prone to nausea and monitor blood pressure, particularly if you have cardiovascular concerns.

Does tolerance develop?

PT-141 has not been reported to cause tolerance with intermittent use.

How should I store it?

Store PT-141 in the refrigerator at 2-8°C and use the reconstituted solution within 30 days.

Do I need to cycle it?

No cycling is required for PT-141, as it is used on an as-needed basis.

Reported Combinations

Compounds reported to be used alongside PT-141 in community discussions

off label-medical

Sildenafil/Tadalafil

Combined use may address dual aspects of sexual function by enhancing central arousal and peripheral blood flow.

investigational

Kisspeptin

Enhances sexual hormone signaling, potentially improving sexual desire when combined with PT-141.

investigational

BPC-157

Enhances healing and may support overall sexual health improvement.

Reported Interactions

Interactions reported in literature and community discussions.

Sildenafilmoderate

Combined use may enhance blood pressure effects; monitor blood pressure.

Nitratesmajor

Avoid combination due to risk of significant blood pressure reduction.

Alcoholmoderate

May enhance blood pressure effects; avoid combination.

Reconstitution Calculator

mL
U100 insulin syringe01020304050607080901001mL

100 units = 1 mL

Safety Tips

  • Always consult a licensed medical professional for dosing and reconstitution instructions.
  • Always double check your units. Mixing up mg and mcg can be very dangerous.
  • Make sure to select your syringe type. U-100 and U-50 syringes have different units.
  • Ensure you're not adding more BAC than your vial can hold. Most vials have maximum capacities listed.

This calculator is for informational and educational purposes only. It does not provide medical advice, dosing recommendations, or safety determinations. Reference ranges shown are compiled from publicly available sources and are not a substitute for guidance from a licensed healthcare professional.

Explore More Research

Browse our database of peptide research information compiled from published literature and community sources.

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Citations

Last updated: October 5, 2023

Important Disclaimer

AI-Generated Content Notice

The information on this page has been compiled using artificial intelligence (AI) and large language model (LLM) technology from multiple sources including published literature, online communities, and public databases. This content may contain errors, inaccuracies, outdated information, or omissions. We make no guarantees regarding the accuracy, completeness, or reliability of any information presented. You are solely responsible for independently verifying any information before relying on it.

Not Medical Advice

Nothing on this website constitutes medical advice, diagnosis, or treatment recommendations. The information provided is for educational and harm-reduction purposes only. We do not provide individualized dosing guidance or treatment recommendations. Protocols and dosing information shown represent reports from community discussions and published literature—they are not endorsements or recommendations. Always consult with a licensed healthcare professional before making any health-related decisions.

No Endorsement of Use

Pepbase does not endorse, encourage, or recommend the use of any peptide or substance discussed on this website. Many compounds discussed are not approved for human use by the FDA or other regulatory agencies. Some substances may be illegal to possess, sell, or use in your jurisdiction. We do not facilitate or encourage the procurement, distribution, or use of controlled or prescription-only substances. Users are solely responsible for understanding and complying with all applicable laws in their jurisdiction.

Calculators and Tools

Any calculators, estimators, or tools provided on this website are for informational purposes only and produce estimates that may be inaccurate. Errors in calculations can result in serious harm. You are solely responsible for verifying all calculations independently. These tools do not account for individual factors that may affect dosing and should never be relied upon as a substitute for professional medical guidance.

Assumption of Risk

By using this website, you acknowledge that you understand the risks associated with using unregulated substances and that you assume full responsibility for your own health decisions. Pepbase, its creators, contributors, and affiliates disclaim all liability for any harm, injury, or damages arising from the use or misuse of information on this website. Use of any information on this site is entirely at your own risk.

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