Hormonal & Reproductive
PT-141 (Bremelanotide) — melanocortin agonist for libido research.
PT-141 is a synthetic melanocortin (MC3R/MC4R) agonist derived from Melanotan II. Unlike PDE5 inhibitors, it acts centrally on the nervous system — approved as Vyleesi for HSDD in women, widely studied for male and female libido.
Each PeptidePen is filled in a controlled cleanroom and sealed with tamper-evident packaging. Batch documentation includes identity confirmation, HPLC purity analysis and concentration verification. Strictly for in-vitro research — not for human or veterinary use.
A full breakdown of mechanism, clinical findings, dosing references and safety signals — for researchers who want the complete picture.
PT-141 is a peptide developed by Palatin Technologies that acts as an agonist of the melanocortin receptor MC1. It is used in the treatment of various sexual dysfunctions and related health issues. For those seeking to buy PT-141, it is known for effectively enhancing libido and supporting improved sexual performance.
Also referred to as Bremelanotide, PT-141 is a synthetic analogue of the α-MSH hormone, which contributes to melanin production in the skin. Initially developed for tanning purposes, it is now primarily used to support sexual function.
PT-141 stimulates melanocyte and xanthine receptors, which boosts libido and sexual desire in both men and women. It has proven helpful in improving erectile function and managing different types of sexual dysfunctions in women.
Ongoing research continues to explore its potential benefits in treating conditions such as depression, hormonal imbalances, chronic pain, and other related disorders.
When you choose to buy PT-141, you may experience a variety of benefits, including: — • Enhanced libido and sexual desire in both men and women — • Improved erectile function and better circulation in the genital region — • Increased sexual sensitivity and more satisfying orgasms — • No mood-altering or euphoric effects — • A reliable alternative to conventional medications for sexual dysfunction — • Greater confidence and comfort during sexual activity — • No negative psychological or physiological side effects — • Support for female sexual dysfunction, improving desire and satisfaction — • Positive impact on symptoms of PTSD, reducing anxiety and unease — • Quick onset of effects, with results that can last for several hours
PT-141 has been the subject of multiple clinical trials demonstrating its effectiveness in enhancing sexual function: — • In 2000, a trial involving women with hypersexual disorder showed that those using PT-141 reported increased sexual desire and greater satisfaction — • A 2004 study with 21 men diagnosed with erectile dysfunction showed that PT-141 significantly improved arousal and sexual performance — • A 2010 study published in the Journal of Sexual Medicine followed 327 women, revealing notable improvements in desire, satisfaction, and sexual activity
These outcomes support PT-141's effectiveness and explain its widespread use for sexual health support.
Understanding the correct approach to using PT-141 is important for safety and effectiveness: — • Standard dosage ranges from 400 µg to 700 µg — • One method involves using 8 units up to 7 hours before intimacy, ideally in the evening, followed by 5 units the next morning. Effects may be noticeable for up to 30 hours — • Another method uses 10 to 12 units several hours before the intended activity — • Max usage: once every 72 hours — • Do not exceed 2 times per week
• One pen contains 200 units, with each unit delivering 50 µg.
Dosage reference by units: — ○ 1 unit = 50 µg — ○ 5 units = 250 µg — ○ 10 units = 500 µg — ○ 12 units = 600 µg — ○ 15 units = 750 µg
PT-141 may be paired with other peptides to optimize outcomes: — • Melanotan II: Works synergistically with PT-141 to boost libido and support sexual function — • Ipamorelin: Enhances energy and stamina through growth hormone stimulation, complementing PT-141's effects
These combinations offer broader support for individuals focusing on physical vitality and sexual health.
While PT-141 is generally well tolerated, mild side effects may include: — • Headaches — • Nausea — • Skin irritation — • Elevated blood pressure
These symptoms are typically short-lived. Following proper dosage guidelines and professional recommendations helps reduce the likelihood of discomfort or complications.
Centrally mediated libido response
Effective in both sexes
Works independently of vascular pathway
Form
Pre-mixed pen
Purity
≥99% HPLC
Storage
2–8°C
Shipping
Cold-chain
COA
Batch-matched
Select pen size and shipping region at checkout.
Each batch is HPLC-assayed and documented.
Insulated, temperature-logged delivery.
Reference dosing and references included.
Common questions about PT 141 (Bremelanotide) and PeptidePen orders.
No. All PeptidePen products are strictly for in-vitro laboratory research. Not intended for human or veterinary use.
Each pen ships with a batch-matched certificate of analysis. A digital copy is also available on request via your order confirmation.
Orders ship cold-chain (2–8°C) with insulated packaging, ice packs and a temperature log. Tracked delivery in the US and EU.
Yes. Contact our team for institutional pricing, custom concentrations and recurring shipments.
Damaged or off-spec pens are replaced free of charge. Contact support within 7 days of delivery.
Pre-mixed, batch-assayed, cold-chain shipped — order before 2pm for same-day dispatch.
