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MTHFR and Vitamin B12 Absorption The MTHFR genetic mutation has a negative effect on B12 absorption, with studies showing an increased prevalence of low blood levels of vitamin B12 in those with the mutation

5-Amino-1MQ formally 5-amino-1-methylquinolinium iodide is a small-molecule selective inhibitor of nicotinamide N-methyltransferase (NNMT)

So, continue injecting daily for at least three months

Insurance companies do not cover Vitamin B12 injections

Therefore, any discussion of synergy is largely theoretical and based on extrapolation from individual studies

Kidney disease can affect the ability to metabolize vitamin B12