PepEvolutionMelanotan II
MT-II
A potent tanning and libido melanocortin agonist — gray-market, not approved, and carries a real melanoma proliferation concern.
Verdict — D · Speculative
Real tanning and libido effects are documented, but a plausible melanoma proliferation signal, spontaneous erections, nausea, and an unverified gray-market supply make this a D-grade compound. The risk-benefit ratio is unfavorable for most buyers. Not approved for any indication.
Overview
Melanotan II (MT-II) is a cyclic melanocortin agonist that promotes eumelanin production (darkening tan), suppresses appetite, and stimulates erectile function. It has significant gray-market use and some published human data, but it has never received regulatory approval. Key safety concerns include: potential melanocytic proliferation (melanoma risk signal, not proven causal but biologically plausible), spontaneous erections and priapism risk, nausea at typical doses, and transient BP changes. The FDA has issued warnings about unapproved injectable tanning products.
PepScore Breakdown — the four axes
Evidence
35% weightHow strong is the published human science?
Sourcing & COA
30% weightOur moatCan a buyer obtain an independently-verified, high-purity version? — our proprietary layer.
Safety & Risk
25% weightWhat is the real-world harm potential?
Practicality
10% weightHow easy is it to actually run a verified version?
Sources & Citations
Every claim cites a primary source. Citations are machine-audited against NCBI — see methodology.
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