Summary: Nicotinamide riboside (NR), a form of vitamin B, increased levels of NAD report researchers in a new study. [This article first appeared on LongevityFacts and was updated on April 3, 2018. Author: Brady Hartman. ] Researchers at the University of Colorado Boulder (UCB) reported that nicotinamide riboside (NR) – a unique form of B vitamin – increased levels of NAD, in a clinical trial of … Continue reading New NR Vitamin Promising to Address Aging in Adults