Compound atlas
Sexual health

Melanotan I

Also known as · MT-1 · Afamelanotide

Peptide
Half-life
1h
approx. mean t½
Dose range
0.5–1 mg
typical, not prescriptive
Category
Sexual health
primary use-case
Single-dose decay
t½ = 1h · first-order model
~4h
to clear
1× t½
50%
remaining
2× t½
25%
remaining
~4× t½
6%
remaining
0%25%50%75%100%0m1.2h2.4h3.6h4.8h6h

How a single dose clears, assuming first-order elimination. The half-life is the biggest driver of how often you dose — start a cycle to see your own cumulative concentration curve.

Overview

A selective MC1 melanocortin agonist for tanning and photoprotection, with fewer libido/nausea effects than MT-2. Approved (Scenesse) for a rare photodermatosis.

Mechanism of action

Selective MC1-receptor agonism stimulating melanin (eumelanin) production.

Typical protocol

0.5–1 mg subQ daily to build a tan, then maintenance.

Storage

Reconstituted: refrigerated, ~30 days.

Disclaimer

This page summarizes publicly available information. None of it constitutes medical advice, prescription, or recommendation to acquire, possess, or use any compound. Many peptides described are research chemicals not approved for human use in the EU. Consult a licensed physician.