NAD+
NMN / NR Precursors
Last reviewed: June 2026 · Medically reviewed by a licensed pharmacist
What it does
NR is a precursor your body converts into NAD+, a molecule that's central to energy production and cellular repair, and that naturally declines as we age. Restoring NAD+ is one of the most active areas in longevity science: supplements reliably raise NAD+ levels in the blood, though research on what that means for energy and aging is still emerging.
The science
NAD+ is the cellular energy currency that declines 50% by age 50. Precursors (NMN/NR) restore NAD+ levels to support mitochondrial health, DNA repair, and longevity pathways.
Most relevant for
Adults interested in healthy aging and cellular energy. (Promising but still-evolving evidence.)
Key references
General wellness information, not medical advice. Consult your healthcare provider before starting any supplement. Build your personalized stack →