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does b12 injection cause headache What You Need to Know About Vitamin Pernicious anemia
VITAMIN B12 (Generic) Injectable Solution, 1000-mcg/mL, 100-mL vial | Chewy Rx
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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Regular check-ups and blood tests can help track B12 levels and address issues promptly
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