is melanotan a steroid No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan-II so risky October 2017 | VOL. 14,
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It is found in the mitochondria (powerhouses of cells) where it facilitates fat metabolism and energy production

[DOI] [PMC free article] [PubMed] [Google Scholar] 118.Cordova A., Monserrat J., Villa G., Reyes E., Soto M.A.M

[DOI] [PMC free article] [PubMed] [Google Scholar] 92.Kahlberg N., Qin C.X., Anthonisz J., Jap E., Ng H.H., Jelinic M., Parry L.J., Kemp-Harper B.K., Ritchie R.H., Leo C.H
However, it is difficult to determine whether the level of training is relevant, as the other two studies included in the review involving trained athletes showed no effect on cognitive function [14, 15]

"Suntan Drug Greenlighted for Trials | WIRED"
