Melanotan II: what it is and what the evidence says
A peptide studied for its relationship with melanocortin pathways, associated with skin pigmentation and desire response.
Last reviewed: August 16, 2026 · How we verify this
The ground it plays on
Hormones work in axes: a signal from the brain tells a gland to release another hormone, and so on down the chain, with brakes that shut the process off. Intervening at one point has consequences both upstream and downstream. That is why this is the group where professional assessment stops being a recommendation and becomes essential.
What it is studied for
Pigmentation, libido.
There is a distinction that almost always gets lost. A compound being studied for something is not the same as achieving it. And even where it works in a dish or in a mouse, that says little about whether it works in a person or whether the benefit is worth the risk. The section below therefore carries more weight than everything above it.
What the human evidence says
There is no controlled clinical trial supporting its use and no approval in any country; the entire human literature consists of case reports and series of ADVERSE EFFECTS in people who self-administered it to get a tan.
The limitation that matters most
Melanoma associated with its use, eruptive nevi and darkening of pre-existing moles within hours or days, and priapism including overdose have all been documented. On top of that, it is sold with no control over identity, purity or sterility.
Regulatory status
Not approved in any country.
Status can change and varies by country. Always verify the rules in force where you live before drawing conclusions.
Cautions and context
May alter moles and pigmentation; requires dermatologic monitoring and caution.
With a history of atypical moles or skin issues, dermatologic assessment is mandatory.
What this page cannot give you
A reference page can take you this far. You know what Melanotan II is and where its research stands, which already puts you ahead of most readers. Four questions remain that no encyclopedia can answer for you, because the answers depend on your own situation:
- What would you measure beforehand, so that later you could tell whether anything actually changed?
- What would you watch along the way, and how consistently?
- What would you ask a professional, and in how much detail, so you do not walk out with a textbook answer?
- What would make you stop?
That is what the course is for
PeptiXtreme is ${CIF.LECCIONES} lessons that hand out no numbers. Each one ends with your starting point, what to watch along the way, the specific questions you take to a professional and the signals that mean stop. It includes per-module exams, a diploma with a verifiable folio, a record to track how you progress, and a human advisor you can actually write to.
See the course → Or measure your judgment, freeReferences
Every entry links to its record on PubMed, the US National Library of Medicine database. Open them and check. We would rather have a reader who verifies than one who takes our word for it.
- Melanotan-associated melanoma.human Br J Dermatol · 2011 · PMID 21564053 →
- Eruptive melanocytic naevi following melanotan injection.human Br J Dermatol · 2009 · PMID 19575725 →
- Eruptive naevi and darkening of pre-existing naevi 24 h after a single mono-dose injection of melanotan II.human Eur J Dermatol · 2014 · PMID 24334249 →
- alpha-Melanocyte-stimulating hormone-induced eruptive nevi.human Arch Dermatol · 2009 · PMID 19380666 →
- Melanotan II overdose associated with priapism.human Clin Toxicol (Phila) · 2013 · PMID 23537392 →
- Melanotan-induced priapism: a hard-earned tan.human BMJ Case Rep · 2019 · PMID 30796078 →
- Melanotan Tanning Injection: A Rare Cause of Priapism.human Sex Med · 2021 · PMID 33460908 →
- Risks of unregulated use of alpha-melanocyte-stimulating hormone analogues: a review.review Int J Dermatol · 2017 · PMID 28266027 →
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Frequently asked questions
What is Melanotan II?
A peptide studied for its relationship with melanocortin pathways, associated with skin pigmentation and desire response. It is studied within the area of hormonal/sexual.
Is there human evidence for Melanotan II?
There is no controlled clinical trial supporting its use and no approval in any country; the entire human literature consists of case reports and series of ADVERSE EFFECTS in people who self-administered it to get a tan.
Is it approved by any health agency?
Not approved in any country.
What is the dose of Melanotan II?
We do not publish dosages. This is not an oversight. No single figure works for everyone: the regimen depends on a person's medical history, on whatever medication they already take, and on the goal they are chasing, which is something a professional weighs with the case in front of them. What you can build is the ability to walk into that appointment knowing what to ask.
Where can I learn to evaluate this properly?
This page tells you what Melanotan II is and what the evidence says. The PeptiXtreme course teaches the other half: what you would measure before considering anything, what you would watch, the specific questions you would take to a professional and when you would stop.