How This Works
Melanotan II is a synthetic cyclic heptapeptide analog of α-melanocyte-stimulating hormone that binds to melanocortin receptors, particularly MC1R and MC4R.
Activation of MC1R on melanocytes stimulates melanin production and distribution, resulting in increased skin pigmentation even without UV exposure. Early Phase I studies in humans identified 0.025 mg/kg per day (approximately 1.5–2 mg for an average adult) as an appropriate dose, with measurable tanning observed after just five low doses administered over two weeks. The peptide’s subcutaneous administration allows for steady melanocortin receptor activation, with effects accumulating over the course of daily injections during the initial tanning phase.
Potential Benefits & Side Effects
Observations from clinical trials and case reports.
Potential Benefits
Increases skin pigmentation (tanning) without UV exposure requirement.
Tanning effects observable after 5–10 daily injections in most individuals.
May induce spontaneous erections in men as a noted side effect (MC4R activation).
Maintenance dosing (1–2× weekly) can sustain pigmentation after initial loading phase.
Common Side Effects
Nausea (dose-dependent; most common at higher doses).
Facial flushing and increased skin warmth.
Reduced appetite and mild fatigue.
Spontaneous erections or increased libido in men.
Injection site reactions (redness, mild stinging).
Serious Risks & Warnings
Not FDA-approved: Melanotan II is not an approved medication; use carries regulatory and safety risks.
Dose-limiting toxicity: Severe sympathomimetic symptoms and rhabdomyolysis reported at 6 mg dose.
Mole changes: May alter pigmentation of existing moles; theoretical melanoma concerns warrant caution.
Cardiovascular effects: Transient increases in heart rate and blood pressure possible at higher doses.
Dosage Guide: http://help.datapeptides.com/en/articles/15074202-melanotan-ii-10mg-vial-dosage-protocol
Disclaimer:
The information provided in this article is for educational and informational purposes only and is not intended as medical advice. These statements have not been evaluated by the FDA or Health Canada. Peptides and other compounds discussed are intended for research purposes only and are not approved for human consumption unless prescribed by a licensed medical professional. Always consult your healthcare provider before starting any new protocol, supplement, or treatment.