melanotan 2 patches is trending again. As a dermatologist, I strongly need to tell you ➡️ It's an unapproved injectable peptide, and we're seeing: • nausea and flushing • darkening of existing moles Melanotan II - Wikipedia
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Thus, while these studies provide valuable information about the BCATi and metabolic differences between healthy and MMUT-deficient hepatocytes, they do not allow us to test the idea that BCAT inhibition in other organs, namely the skeletal muscle, could lower toxic catabolites in the liver and be useful for the therapy of MMA
Melanotan 2 is non-selective

Singh reiterates

doi:10.1161/JAHA.123.029852 McGraw KE, Schilling K, Glabonjat RA, et al