Summary Description: Nicotinamide adenine dinucleotide (NAD?) is a ubiquitous pyridine nucleotide coenzyme present in all living cells. It serves critical roles in cellular redox reactions for energy metabolism and acts as an essential substrate for key signaling enzymes regulating DNA repair, gene expression, and cell signaling. Cellular NAD? levels influence metabolic health, stress response, and tissue regeneration1,3.
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