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The Powerhouse: NAD+ NAD+, or nicotinamide adenine dinucleotide, is a key coenzyme found in every cell in our body

Active Ingredients: Each mL OF sterile aqueous solution contains: Cyanocobalamin (B12) 5,000 mcg Sodium chloride 0.22% w/v Ammonium sulfate 00.1% w/v Citric acid 0.01% w/v Sodium citrate 0.008% w/v Benzyl alcohol (preservative) 1.0% v/v Indications: For use as an aid in the management of vitamin B12 deficiencies in horses, dogs and cats

So most of the evidence comes from animal models , experiments on animals, most often rats

[CrossRef] [Google Scholar] Mitochondrial dysfunction: a crucial event in okadaic acid (ICV) induced memory impairment and apoptotic cell death in rat brain