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PT-141 (Bremelanotide)

Born as a breakdown product of Melanotan 2, and grown into a registered medicine.

PropertyValue
TypePeptide, 7 amino acids
ReceptorsMelanocortin receptors
Research fieldLibido and arousal
Research statusApproved in the US for a specific indication
FormFreeze dried powder

What it is

When researchers studied Melanotan 2, they noticed its breakdown product had an action of its own, unrelated to pigment. That fragment became PT-141.

How it works

Unlike the familiar erection pills, which widen blood vessels, PT-141 acts in the brain, on melanocortin receptors involved in desire. That is a fundamentally different mechanism.

What the research shows

Large controlled studies have been run, resulting in approval in the United States for a defined indication in women. That puts it in the small group of substances in this field with real clinical evidence.

Research status

An approved medicine in the US. The product sold as a research compound is not that.

Practical

Dissolves well in bacteriostatic water. Keep the powder cool and dark.

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What this site is and is not
This site explains what the scientific literature says about peptides. It is not medical advice and not a set of instructions. The substances discussed here are research compounds: they are not approved for use in humans or animals. If you have a health question, see a doctor.

Updated 2026-10-03

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