Nad+ Interactions

Niacin (nicotinic acid) is a vitamin B3 form the body converts to NAD+ through the Preiss-Handler pathway, so pairing low, vitamin-level niacin with a direct NAD+ precursor gives cells more than one biosynthetic route to build their NAD+ pool. Niacin has been shown to raise muscle and blood NAD+ in mitochondrial myopathy, though no human trial has tested combining it with direct NAD+, NR, or NMN; the synergy is plausible additive biology rather than a proven stack.