Niacinamide, also known as nicotinamide, is a bioavailable form of vitamin B3 and a key precursor to NAD⁺, a molecule essential for cellular energy production and repair. NAD⁺ levels naturally decline with age, making niacinamide an ingredient of growing interest in longevity and healthy aging.

Beyond its role in cellular health, niacinamide supports skin barrier function, cognitive performance, metabolic health, and normal nervous system function. Unlike niacin (nicotinic acid), it does not cause flushing, making it suitable for daily supplementation.