Who should not take MT-2 (Melanotan II)?
Documented caution flags for MT-2 (Melanotan II) include personal history of melanoma and atypical mole syndrome. This is not exhaustive, and absence from this list is not a safety clearance. Anyone pregnant, nursing, or managing a serious medical condition should only consider it under a doctor's care, and safety data for MT-2 (Melanotan II) is limited.
Documented caution flags for MT-2 (Melanotan II)
- Personal history of melanoma
- Atypical mole syndrome
- Pregnancy / nursing
Reported side effects to weigh
- Nausea (more pronounced than MT-1)
- Facial flushing
- Spontaneous erections / increased libido
- Appetite suppression
References
- Evaluation of melanotan-II, a superpotent cyclic melanotropic peptide in a pilot phase-I clinical study — Dorr RT, Lines R, Levine N, Brooks C, Xiang L, Hruby VJ, Hadley ME — Life Sciences, 1996;58(20):1777-84
- Melanotropic peptides: more than just 'Barbie drugs' and 'sun-tan jabs'? — Langan EA, Nie Z, Rhodes LE — British Journal of Dermatology, 2010;163(3):451-5
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
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Last updated 2026-06-15.