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NAD+ (nicotinamide adenine dinucleotide) is a coenzyme central to mitochondrial energy production, DNA repair, and sirtuin activation — the molecular machinery of cellular longevity. Levels decline by roughly 50% between ages 20 and 50.\n\nIntravenous NAD+ replenishes the precursor pool directly, bypassing oral absorption limitations. At Spanish Center Dubai, Dr. Razzak uses a 750mg standard dose delivered over 60–90 minutes, with the option to titrate based on tolerance and clinical context.\n\nA 2021 study in Science (Yoshino et al.) demonstrated NAD+ precursor supplementation improved muscle insulin sensitivity in postmenopausal women. A 2023 review in Cell Metabolism (Verdin et al.) consolidated evidence that NAD+ restoration supports cognitive performance, energy metabolism, and DNA repair fidelity.\n\nMost patients report sharper mental clarity and noticeable energy improvement within the first 1–3 sessions. A starter protocol is typically 4 sessions over 2 weeks, followed by maintenance every 4–8 weeks.