NAD+ is a foundational coenzyme involved in cellular energy production, mitochondrial function, and metabolic activity. It has gained significant attention in research focused on healthy aging, energy metabolism, and how cells respond to stress.Researchers are interested in NAD+ because it plays a central role in ATP production, redox balance, and key enzyme systems linked to cellular repair and mitochondrial performance. For customers exploring mitochondrial support compounds, NAD+ stands out as one of the most discussed molecules in the category.