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NNMT is a cytosolic enzyme that methylates nicotinamide (vitamin B3) using S-adenosylmethionine (SAM) as a methyl donor

(5) This supplement is typically taken orally and can support muscle growth and strength, enhance metabolism, improve joint health, and may even improve sleep quality

Adam RC, Pryce DS, Lee JS, Zhao Y, Mintah IJ, Min S, et al

Analytical procedures and methods validation for drugs and biologics

Keep in mind it comes as a 30 mL multi-use vial, should not be used in newborns, and should not be injected intravenously by itself due to its hypotonicity

doi: 10.1038/s41591-024-03038-y 215 WangL.WangY.XuH.LiW