NADH (sodium salt hydrate) is an orally effective reduced coenzyme. NADH disodium hydrate plays a role in regenerating electron donors during cellular energy metabolism, including glycolysis, β-oxidation, and the tricarboxylic acid (TCA) cycle. NADH disodium hydrate regulates calcium homeostasis by promoting the opening of IP3-gated Ca2+ channels and inhibiting Ryanodine receptor, and affects mitochondrial function through direct interaction with VDAC. NADH disodium hydrate is used in cytoprotective studies related to cerebral ischemic injury, neurodegenerative diseases, aging, and signal transduction。