High-Potency NAD+ Celluar Repair Complex

Nicotinamide adenine dinucleotide (abbreviated as NAD), also known as pyridine dinucleotide phosphate (abbreviated as DPN), or coenzyme I. In mammals, it exists in both oxidized (NAD+) and reduced (NADH) forms. The oxidized form (NAD+) exhibits maximum ultraviolet absorption at 260 nm. Through various deaminases, it accepts one hydrogen atom and one electron from substrates to convert into the reduced form (NADH), which shows maximum absorption at 340 nm.

β-Nicotinamide adenine dinucleotide functions as a coenzyme in redox reactions, serves as a donor for the ADP-ribose moiety in ADP-ribosylation reactions, and acts as a precursor for cyclic ADP-ribose, a second messenger molecule. β-Nicotinamide adenine dinucleotide also serves as a substrate for bacterial DNA ligase and a group of enzymes called sirtuins, which use NAD⁺ to remove acetyl groups from proteins.

(1) The Core Carrier of Energy Metabolism: NAD serves as the pivotal “electron transporter” in cellular respiration and energy production. It accepts electrons during processes like glycolysis and the tricarboxylic acid cycle, then delivers them to the electron transport chain within mitochondria, thereby driving the extensive synthesis of ATP—the cellular currency of energy.

(2) Coenzyme for Cellular Repair and Renewal: As a coenzyme for hundreds of redox enzymes in the body, NAD directly participates in countless redox reactions within cells. It is essential for maintaining normal cellular function and promoting cellular repair and renewal.

(3) As a precursor to signaling molecules: NAD serves as a substrate for multiple vital signaling molecules, including:

Activating longevity proteins Sirtuins: Sirtuins are a class of proteins linked to cellular stress resistance, metabolic regulation, and lifespan, whose activity depends on NAD.

Participating in DNA repair: The DNA damage repair enzyme PARP consumes NAD as a raw material when repairing broken DNA strands.