Melanotan II Reference

Plain English

What it is

Melanotan II is a lab-made peptide that copies a natural body signal called melanocortin, which tells skin to make more of the brown pigment behind a tan. It is not approved by the FDA for any use. It is also not the same thing as afamelanotide (brand name Scenesse), a separate compound that is FDA-approved.

What people use it for

In online communities people use it to try to darken their skin without sun and to raise sexual arousal. These are community claims, not approved or proven medical uses.

What the science shows

What is documented comes mostly from animal and lab work plus scattered human case reports, not from modern clinical trials. The tanning, libido, and body-composition claims people make for it are not backed by approved human research.

The catch

Health regulators have warned that melanotan tanning products are unlicensed and may not be safe. Reported harms include priapism, a prolonged and painful erection that is a medical emergency, along with nausea and unpredictable darkening of moles or new pigmented spots. Case reports have also raised concern that it may increase the risk of melanoma, a serious skin cancer.

Reference summary

Melanotan II pharmacology is broadly characterized in preclinical work, but there is no modern human clinical program supporting tanning / sexual-health / body-composition community claims. Adverse-event reports including priapism and unpredictable pigmentation are documented.

Regulatory and posture

Categories

Skin/Hair

Aliases

MT-II, MT-2, Melanotan 2, α-MSH analog

Evidence posture

preclinical - FDA has issued consumer safety communications about melanotan products. Priapism, nausea, unpredictable pigmentation changes, and concerns about melanocytic lesions are commonly reported in adverse-event literature.

Regulatory status

No FDA-approved Melanotan II drug label. FDA has issued consumer safety communications about melanotan tanning products, citing unapproved marketing, unknown purity, and documented adverse events. Melanotan II is not the same compound as FDA-approved afamelanotide (Scenesse / Melanotan I).

Content review status

research reference

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