Melanotan I and II Research Peptides | Safety Facts, COA Verified

Melanocortin Peptides: Melanotan I and II for Research, With the Safety Record First

This category holds research peptides that act on melanocortin receptors. Read the safety facts first, because these compounds carry a heavier record of harm than most peptides on our site. We test every batch by HPLC and mass spectrometry and attach a lot matched COA to each vial.

Products in This Category

Melanotan I targets one receptor and relates to afamelanotide, which holds FDA approval as Scenesse for a rare light sensitivity disorder. Melanotan II acts on several receptors, causes stronger effects, and has no approval anywhere. PT-141 descends from Melanotan II and became the FDA approved drug Vyleesi.

How to Choose

Compound	Receptor profile	Approval status
Melanotan I	Selective for pigment receptor	Related drug approved for a rare disorder
Melanotan II	Non selective	None
PT-141	More selective for MC4R	Approved as Vyleesi

Safety and Regulation

Published case reports link Melanotan II to changing moles, melanoma, priapism, kidney injury, and muscle damage. Case reports cannot prove cause, but the pattern led dermatologists to issue public warnings. Anyone with a personal or family history of melanoma, many moles, or high blood pressure should avoid these compounds. We do not publish self dosing numbers. We sell everything strictly as research compounds, not for human or veterinary use and not for tanning. Regulators in several countries have restricted or banned human supply.