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Epigenetic Regulation NNMT activity consumes S-adenosylmethionine (SAM), the universal methyl donor required for hundreds of methylation reactions throughout the cell

On the other hand, there is no such thing as a vitamin B12 overdose, because there is no such thing as a maximum dose for vitamin B12, according to both Tufts University Health & Nutrition Letter and Harvard T.H

The body is undergoing metabolic shifts as fat oxidation increases

For example, individuals with Lebers disease, a rare genetic disorder, may be at risk of optic nerve damage from B12 injections

5-Amino-1MQ selectively inhibits nicotinamide N-methyltransferase (NNMT) by binding the enzymes active site