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What Happens if You Take Too Much Vitamin B12

doi: 10.1016/0002-9394(55)91842-0

& Gordon, J

BIOAVAILABLE FOR METABOLIC SUPPORT* Vitamin B12 is a critical cofactor for enzymes involved in methylation & energy metabolism, supporting key processes like DNA synthesis and nervous system function

With NMN, research in humans is still emerging, but similar doses (250500 mg) are commonly used by consumers, and studies in adults have used up to 600 mg daily safely