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Competitive NNMT (nicotinamide N-methyltransferase) inhibitor preventing nicotinamide from being diverted away from the NAD+ salvage pathway
If this occurs after you take vitamin B12, call 911 or your local emergency services immediately
Only a small share of a large oral dose is absorbed by the bodys usual receptor-based route, but the surplus crossing the gut wall by simple diffusion is still enough to lift a serum reading well above the reference range
Private clinics offering B12 injections for wellness purposes operate outside NHS prescribing guidelines, and patients should exercise caution regarding unsubstantiated health claims
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