Melanotan II

Overview

Mechanisms

Evidence

Anecdotes

• [anecdote] Stimulates alpha-MSH → tanning ‘from the inside out’; MSH may bolster immune response/energy; downside is an unnatural orange tan. — Koniver 02:08–02:09

• [anecdote] Crosses the blood-brain barrier (unlike melanotan 1) → raises mood/libido, lowers appetite, plus tanning. — Huberman 01:14–01:15

Physician protocols

Practical notes

• [warning] Melanoma caution — stimulates melanocytes. — Huberman 01:17

• [regulatory] US status (2026): Melanotan II was among the ~12 peptides removed from FDA Category 2 (Feb 2026), but it is not on the July 23–24 2026 PCAC 503A agenda — no active 503A review. Not FDA-approved; the melanoma/melanocyte caution above stands regardless of compounding status. — SOURCE-fda-pcac-503a-peptide-review-2026