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Vitamin B12 is a water-soluble hematopoietic vitamin occurring in meats and animal products
The production dosage forms involved powder, extraction of Chinese traditional medicine, large and small volume injections, disinfectants, feed additives and so forth
Methylcobalamin, which is also known as mecobalamin, is the biologically active form of vitamin B12
It uses a methyl group donated by S-adenosylmethionine (SAM) to methylate nicotinamide a vitamin B3 form that would otherwise be recycled back into NAD+
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