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Trabesinger AH, Weber OM, Duc CO, Boesiger P (1999)

To help athletes and sports supplement brands stay compliant with the WADA List, Informed Sport certification offers a reliable solution

For the BMJ authors, the clinical picture is the most important factor in determining whether someone has B12 deficiency

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Cost: Injections and IV drips can be expensive and impractical

When a cell over-expresses NNMT, it does two costly things at once: it burns through methyl-donor capacity, and it diverts nicotinamide away from NAD+ regeneration into an inert metabolite (1-methylnicotinamide) that gets excreted