b12 injection training course for non medics Online Vitamin | Accredited CPD Injector Training for Nurses -
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It is a small molecule called 5-amino-1-methylquinolinium, with no amino acids and no peptide bonds

NNMT takes nicotinamide, a form of vitamin B3, and attaches a methyl group to it, using SAM (S-adenosylmethionine) as the methyl donor
The pattern resolves by week 2 in most community reports
