NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme vital to energy production and cellular repair. But by middle age, NAD+ levels drop by ~50%, and by age 60–70, they may decline to just 20–25% of youthful levels —impacting energy, cognition, metabolism, and longevity. o2 NAD helps anyone looking to: Combat fatigue and brain fog, support graceful aging, boost energy naturally, and enhance overall cellular health.