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Description
Rather than directly supplying NAD+ precursors (like NMN or NR), it works by blocking an enzyme that consumes nicotinamide, theoretically preserving the substrate pool for endogenous NAD+ production
A study in the Journal of the American Geriatrics Society found that older adults might need more Vitamin B12 because their bodies absorb it less well

Doctors should watch for these interactions to avoid serious health problems
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