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Chronic Vitamin B12 Deficiency
NNMT Biology, Selectivity, and Off-Target Interpretation NNMT, or nicotinamide N-methyltransferase, catalyzes the N-methylation of nicotinamide using S-adenosyl-L-methionine as the methyl donor, producing N1-methylnicotinamide and S-adenosyl-L-homocysteine
Yang, L
This test checks to see if you have enough of it in your blood
[3] [8] Patients receiving B12 injections should inform their healthcare provider of all medications, as certain drugs (including metformin, proton pump inhibitors, and chloramphenicol) can affect B12 absorption or metabolism
All of these findings are in rodents, and their relevance to humans is unestablished
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