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. Stock is maintained for the most requested products to shorten lead times, and made-to-order items are typically produced within days. We support bank transfer, major digital payments and verified trade channels, with order updates provided at every shipping stage. Protective secondary packaging is standard for international parcels.