Chronic?nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults.
Martens CR, Denman BA, Mazzo MR, Armstrong ML, Reisdorph N, McQueen MB, Chonchol M, Seals DR. Chronic?nicotinamide riboside supplementation is well-tolerated and elevates NAD+ in healthy middle-aged and older adults. Nat Commun. 2018 03 29; 9(1):1286.