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A 2015 review in Cell Metabolism demonstrating that NAD+ precursor supplementation reverses mitochondrial dysfunction in aged muscle and restores metabolic function reinforced the mechanistic rationale for NAD+ as a longevity therapy

After opening, use it within the shelf life stated on the label, store it refrigerated, and check that it looks clear before each use: do not use water that is cloudy, discolored, or has visible particles.

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well-tolerated in mice, rats, rabbits, and dogs with no serious organ toxicity.[34][35] Clinical Safety : Mild local irritation possible at injection sites, but no systemic adverse effects reported in trials.[36][37] Potential Risks : Theoretical concerns include pro-angiogenic effects potentially promoting tumor growth, though no evidence supports this in studies.[38] Long-term human data is limited, so monitoring is advised