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Melanotan II
Limited
Research chemical
Summary
Non-selective melanocortin agonist used illicitly for tanning and libido; notable side-effect profile.
Categories
Skin & Aesthetic, Sexual Health
Mechanism
Agonist at MC1R (pigmentation) and other melanocortin receptors including those tied to sexual function (overlap with PT-141 pathway).
Half-life
Hours; loading then maintenance discussed in communities
Routes
Subcutaneous injection; Intranasal
Legal / access
Not approved for tanning. Sale as a cosmetic tanning injection is illegal in many jurisdictions.
Key risks
- Nausea and flushing
- Spontaneous erections
- Darkening of moles/freckles
- Appetite changes
Common claims
- Deep tan with less UV
- Libido increase
- Appetite suppression
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