Charles Brenner, MD, the chair of the Department of Diabetes & Cancer Metabolism at the Beckman Research Institute of the City of Hope National Medical Center. Disclosure: He is a scientific advisor for a company that sells an NR supplement.
Vitamin B3 isn’t a single substance: It’s a family of three vitamers (similar but not identical forms of a vitamin), including nicotinamide, niacin, and nicotinamide...
