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PT-141 (Bremelanotide)

Also known as: PT-141, Bremelanotide, Vyleesi, PT141

PT-141 (Bremelanotide) is a melanocortin-receptor agonist that has been studied in the context of sexual function and has an approved indication for certain patients in that area. It is typically described as being used on an as-needed basis. This entry is informational and is not a recommendation to use the compound.

At a glance

CategoryCosmetic & Other
Classpeptide, melanocortin-agonist
Half-life2.7 hours
Typical routesubcutaneous
Common vial strengths5 mg, 10 mg
StorageLyophilized powder is commonly stored frozen or refrigerated; reconstituted solutions are typically kept refrigerated.

Elimination curve

100%50%25%12.5%2.75.48.1110hours after a single dose
Simple single‑compartment elimination model ((1/2)t/t½): it ignores absorption, route, and individual variation, so treat it as a shape, not a measurement. In the Peptilot app this curve is stacked across your actual logged doses.

Full clearance milestones on the PT-141 (Bremelanotide) half-life page.

Doing the vial math? The PT-141 (Bremelanotide) reconstitution calculator converts mg to insulin-syringe units, free and without an account.

Questions, answered.

What is PT-141 (Bremelanotide)?
PT-141 (Bremelanotide) is a melanocortin-receptor agonist that has been studied in the context of sexual function and has an approved indication for certain patients in that area. It is typically described as being used on an as-needed basis. This entry is informational and is not a recommendation to use the compound.
What is PT-141 (Bremelanotide)'s half-life?
PT-141 (Bremelanotide)'s elimination half-life is approximately 2.7 hours, per published pharmacokinetic data. After about five half-lives (~13.5 hours), a single dose is roughly 97% eliminated. Individual clearance varies.
Is PT-141 (Bremelanotide) the same as PT-141 or Bremelanotide or Vyleesi or PT141?
PT-141 and Bremelanotide and Vyleesi and PT141 are other names associated with PT-141 (Bremelanotide).
What do people log alongside PT-141 (Bremelanotide)?
People tracking this compound often log tolerance, including nausea and flushing, and timing relative to effect. Peptilot has one-tap logging for doses, side effects, weight, and injection sites, so patterns show up in your own record.

Educational information for people who track their protocols — not medical advice, and never a recommendation to use any compound. Always work with a qualified healthcare provider.

Track PT-141 (Bremelanotide) with one-tap dose logs, estimated level charts, site rotation, and reminders — free for your first 3 days.

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