NOW Foods NADH 10 mg provides the active, bioavailable coenzyme form of vitamin B3 — nicotinamide adenine dinucleotide (NADH) — the cellular energy currency that drives mitochondrial ATP production in every cell of the body. NADH is a direct participant in the electron transport chain, where it donates electrons to generate ATP, the energy molecule that powers all cellular functions. NADH also plays a role in neurotransmitter synthesis, supporting dopamine and norepinephrine production, which may explain research findings supporting its use for cognitive function, energy levels, and mood. NOW Foods delivers 10 mg of stabilized NADH per capsule in an enteric-coated, energy-stabilized formulation that protects this fragile molecule through the stomach for optimal intestinal absorption. Manufactured in NOW's GMP-certified facility.