Niacin Fact Sheet for Health Professionals by the Office of Dietary Supplements (source code)

= Niacin Fact Sheet for Health Professionals by the Office of Dietary Supplements
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https://ods.od.nih.gov/factsheets/Niacin-HealthProfessional/

Official NIH Office of Dietary Supplements fact sheet. Introduction: niacin chemical forms, nicotinamide, NAD and NADP; no clinical recommendations reproduced.