Melanotan II
Symbol M2 · MW 1024 Da
Cyclic α-MSH analog studied for melanogenesis and tanning response.
- Discovered
- 1990
- Half-life
- 1 hour
- Approval
- Not FDA-approved; safety concerns
Reported effects
- Tanning response
- Appetite effects
- Libido research
Overview
Melanotan II is a synthetic melanocortin receptor agonist commonly associated with skin pigmentation, tanning, libido, and appetite-related effects. It works by activating melanocortin receptors, which are involved in melanin production and several other biological pathways. Melanotan II is often discussed as a tanning peptide because it may increase skin pigmentation, but it also has broader effects that make safety and sourcing important concerns. It is different from approved medical pigmentation therapies and should not be treated as a simple cosmetic product. Its purpose is primarily related to melanocortin signaling, pigmentation support, and secondary effects on sexual function and appetite.
How it's taken
- Typical Administration
- Injectable
- Typical Dosage
- No established approved dosage; commonly referenced range is 250 mcg–1 mg per injection
- Typical Frequency
- Daily during loading phases; 1–3 times weekly for maintenance-style protocols
Research sources
Source links included from peer-reviewed literature and trusted medical journal records for this peptide.
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For educational purposes only. Many peptides shown are research compounds and not approved for human use in all jurisdictions.