Melanotan I

What is Melanotan I?

Melanotan I (Afamelanotide) is a synthetic MC1R-selective alpha-MSH analog with prescription-grade evidence for erythropoietic protoporphyria, where Langendonk reported 69.4 versus 40.8 hours of pain-free sun exposure in the US Phase III arm. Afamelanotide works by increasing eumelanin through MC1R, which explains why the upside is strongest for photoprotection and pigment-related use cases. Melanotan I earns a worth-trying score because regulated SCENESSE has meaningful human evidence and the intrinsic afamelanotide safety profile is manageable with dermatology monitoring.

From the BioHarmony report, reviewed 2026-09-08.

How it is thought to work

MC1R activation increases eumelanin and UV tolerance

Safety watch-outs

• New or rapidly changing mole, oral pigmentation, or bleeding lesion
• Severe headache, confusion, vision change, chest pain, or neurologic symptoms
• Priapism, severe abdominal pain, dark urine, or muscle pain after dosing

Full risk profile in the BioHarmony report.

Dosing as published

No approved-label or study protocol is recorded for Melanotan I yet.

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