can you drink alcohol while getting b12 injections How to Give a Injection: Step-By-Step Instructions B12 Shot | The IV
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Attwell K, Hannah A

doi:10.1111/j.1532-5415.1996.tb01389.x

NNMT uses up nicotinamide by tagging it with a methyl group (a process called methylation) and sending it out as waste

Many patients have undiagnosed low b12 even before medication use, particularly among certain risk groups
