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The convenience of skipping injections must be weighed against potentially variable absorption rates and the need for more precise timing around meals
All three deliver nicotinamide adenine dinucleotide (NAD+) a coenzyme essential for cellular energy, DNA repair, and longevity but they differ dramatically in bioavailability, time commitment, cost, and convenience
ZhangWMiaoJZhangGLiuRZhangDWanQet al
Braz J Med Biol Res 51(7):e7172
Velasquez, M.T., et al
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