NAD+ (nicotinamide adenine dinucleotide) is a central coenzyme in cellular energy metabolism, redox reactions and signaling through sirtuins and PARPs, positioning it at the heart of bioenergetics and aging research. Its concentration declines with age in many models, making it a frequent subject of supplementation studies. This product is a white crystalline powder of >=99% HPLC purity in a sealed vial, with batch documentation and bulk supply options. All items are dispatched in plain, discreet packaging to protect buyer privacy, and high-value orders may be split into multiple parcels for customs safety. Delivery times to most destinations range from a few days to two weeks depending on the region and courier selected.