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Evidence gap Large-scale, long-duration RCTs of subcutaneous NAD+ for wellness or longevity endpoints have not been published as of June 2026
Treatment is typically lifelong for patients with pernicious anaemia or irreversible malabsorption conditions
Daily intake of 4 to 7 g dietary vitamin B-12 is associated with steady concentrations of vitamin B-12related biomarkers in a healthy young population
T., Holysz, M
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