Melanotan I · DOSSIER

Melanotan I

Melanotan-1 · MT-I · Peptide · 13 AS
LEGAL DE · PRESCRIPTION-ONLYEVIDENCE · CLINICALLY ESTABLISHED2 STUDIES
SUMMARY

Specifically boosts tanning; as a drug it protects very light-sensitive skin from pain.

FIG.01 — SIGNAL CHAIN
Ac-Ser-Tyr-Ser-Nle-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH₂ · ~1646.8 Da
EVIDENCE LEVELSPROVEN IN HUMANSANIMAL MODELS ONLYMECHANISM ONLYUNPROVEN IN HUMANS
01

What it does in the body

Findings, each with its evidence level — animal data kept visibly apart from what's unproven in humans.

Tans & protects from light

Specifically boosts tanning; as a drug it protects very light-sensitive skin from pain.

PROVEN IN HUMANS
Approved as a drug (EPP)

Approved as afamelanotide (Scenesse) in the EU & US for a rare light disorder — an implant given under medical supervision.

PROVEN IN HUMANS
The tanning grey market is not approved

The Melanotan I sold freely as a tanning agent is a separate thing and is not approved as a medicine.

UNPROVEN IN HUMANS
02

Mechanism of action

What Melanotan I does in the body — step by step.

01

Melanotan I is a linear analog of α-melanocyte-stimulating hormone (α-MSH) with increased stability through the Nle4 and D-Phe7 substitutions.

02

It binds predominantly to the melanocortin-1 receptor (MC1R) on melanocytes and stimulates the formation of eumelanin.

03

This enhances skin pigmentation, which is used for photoprotection in a medical context.

03

Research status

How far along is the evidence?

PRECLINICALEARLY CLINICAL STUDIESCLINICALLY ESTABLISHED
As afamelanotide (Scenesse), Melanotan I is approved in the EU and USA for treating erythropoietic protoporphyria (EPP) — a rare, painful light sensitivity.
As afamelanotide (Scenesse), Melanotan I is approved in the EU and USA for treating erythropoietic protoporphyria (EPP) — a rare, painful light sensitivity.
Controlled studies documented prolonged pain-free sunlight exposure.
It is administered as a subcutaneous depot implant under medical supervision.
Obtaining „Melanotan I“ as a tanning research chemical is clearly separate from this and not approved.
04

Known risks

Without human data, safety statements are limited. What is known:

01
Nausea, flushing, headache (melanocortin class effect)
02
Increased/atypical pigmentation of moles — dermatological monitoring needed
03
With unapproved products: unknown purity and dosing
04
Long-term safety of tanning use not established
05

Cited studies

Chronological — links lead to the source.

2015
Afamelanotide (CUV1647) in dermal phototoxicity of erythropoietic protoporphyria
PubMed 25470471 →
2021
Afamelanotide for prevention of phototoxicity in erythropoietic protoporphyria
PubMed 33507118 →
06

Frequently asked questions

What is Melanotan I?+

Melanotan I is a linear analog of α-melanocyte-stimulating hormone (α-MSH) with increased stability through the Nle4 and D-Phe7 substitutions.

What type of peptide is Melanotan I?+

Melanotan I belongs to the Melanocortin class.

What is Melanotan I used for?+

In research, Melanotan I has primarily been investigated in the context of: Skin & hair. These are research findings (evidence: clinically established), not proven benefits in humans and not a usage recommendation.

Is Melanotan I legal in Germany?+

Melanotan I is prescription-only in Germany and may only be obtained with a medical prescription.

Is Melanotan I FDA-approved / legal in the US?+

Melanotan I is a prescription, FDA-approved medication in the US.

Is Melanotan I legal in Canada?+

No. Melanotan I is not authorized by Health Canada and not intended for human consumption.

Where can I buy Melanotan I?+

Peptica sells nothing and names no sources. Melanotan I is "prescription-only" in Germany; obtaining unapproved substances outside clinical studies is illegal and carries quality and safety risks.

What is the dosage of Melanotan I?+

Peptica publishes no dosing. Melanotan I is a prescription medicine — any dosing is determined individually by a physician. This is not medical advice.

Is Melanotan I banned in sport (WADA)?+

Melanotan I is currently not on the WADA Prohibited List.

What are the known risks of Melanotan I?+

Documented risks include: Nausea, flushing, headache (melanocortin class effect); Increased/atypical pigmentation of moles — dermatological monitoring needed. This is not a complete safety assessment and not medical advice — see the risks section for the full list.

How well researched is Melanotan I?+

The evidence is classified as “clinically established”. 2 studies are cited on this page.

What is the molecular weight of Melanotan I?+

Melanotan I has a molar mass of about 1646.8 Da, with a plasma half-life of ~30 minutes (peptide).

Which peptides are related to Melanotan I?+

Closely related entries: PT-141, Melanotan II. A direct side-by-side comparison is available via the compare function.

07

Dossier

Legal · Structure · Sources.

LEGAL STATUS BY REGION
Germanyprescription-only

Afamelanotide (Scenesse) is approved as a medicine for the rare disease EPP and is strictly prescription-only (specialist centres). Freely traded „Melanotan I“ for tanning purposes is not approved; obtaining it that way is illegal and carries quality and safety risks.

Legal status varies by country and can change. This is not legal advice.

STRUCTURE & MOLECULE
H₂NAc-Ser-Tyr-Ser-Nle-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NHCOOH
13
AMINO ACIDS
~1646.8
MOL. WEIGHT (Da)
~30 minutes (peptide)
HALF-LIFE
SOURCES & EXTERNAL DATABASES

Methodology: Peptica compiles publicly available studies and regulatory information and assigns each statement an evidence level. Not medical advice. No warranty.

RELATED PEPTIDES & FURTHER READING
08

Community notes

Note: These posts are user opinions and not medical advice. Posts containing dosages, therapeutic claims or purchase recommendations are removed. All entries are manually reviewed before publication.
This page is intended solely for factual, scientifically oriented information. No medical advice · no dosage or usage recommendations · no claims of efficacy · no substitute for medical consultation. Peptica sells no substances. Partner links are marked as advertising; Peptica may earn a commission. © 2026 Peptica · Issue 01