There’s no denying, NAD+ (a.k.a. the fountain of youth, bottled) is the hottest wellness trend right now. There are a few different delivery systems—IVs, subcutaneous injections, nasal sprays, and of course, the best NAD+ supplements—to help address everything from loss of muscle mass to brain fog, skin aging, and declining energy stores.

Nicotinamide adenine dinucleotide (NAD+) supports virtually every major cellular function, explains board-certified internist and longevity expert Dr. Amanda Kahn . “It helps your cells generate ATP (energy), protects against oxidative stress, assists in DNA repair, promotes collagen and elastin synthesis for youthful skin, keeps brain and immune cells functioning optimally, and helps maintain microvascular health to ensure proper nutrient delivery t

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