Melanotan II: What the Research Shows
Also known as: MT-2, MT-II
A melanocortin receptor agonist that stimulates melanin production (tanning) and has sexual function effects. Significant safety concerns.
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Quick Facts
Regulatory Status
Not FDA-approved. Sold illegally as a tanning product. FDA has issued multiple warnings about unlicensed products.
Researched Applications
Key Research (1 studies cited)
Melanocortin-based therapeutics for erection and libido dysfunction
reviewHadley ME, et al. (2006) — International Journal of Impotence Research
Review of melanotan II showing both tanning and sexual function effects via melanocortin receptor activation.
Key finding: Melanotan II demonstrated both skin tanning and pro-erectile effects in human studies, leading to development of PT-141.
PubMed: 16107869About this article: Written by the PeptideMark Research Team. Last reviewed 2026-03-11. All factual claims are cited to peer-reviewed sources. PubMed links open in a new tab for independent verification. Editorial methodology · Medical disclaimer
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