https://en.wikipedia.org/wiki/Melanotan_II says it is banned in the United States, and anything you get on the black market isn't guaranteed to be pure.

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0_____0 12 hours ago | parent [-]

Where does it say it's banned?

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fhdkweig 11 hours ago | parent | next [-]

Second paragraph mentions "regulatory restrictions".

Clinuvel Pharmaceuticals intended to offer it as a cosmetic, but abandoned this pursuit in the 2000s due to regulatory restrictions and concerns about the promotion of suntanning. Unlicensed Melanotan II is found on the internet, although health agencies advise against its use due to lack of testing and regulatory approval.

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IAmGraydon 11 hours ago | parent | prev [-]

It’s banned for cosmetic use. You can still buy it as a “research chemical”.

	▲	echelon 10 hours ago \| parent [-]
		Do not buy it. https://news.ycombinator.com/item?id=46345971