Mechanism

Nicotinamide adenine dinucleotide (NAD+) is an essential coenzyme involved in cellular energy metabolism (redox reactions) and as a substrate for enzymes such as sirtuins and PARPs. Interest centers on maintaining NAD+ levels, which decline with age in preclinical models.

Research summary

NAD+ biology is well established, but evidence for direct NAD+ supplementation (including IV administration) improving clinical outcomes is limited; much human research focuses on precursors such as NR and NMN. It is generally marketed as a supplement rather than an approved drug for specific indications.

Reported side effects

IV administration has been associated with infusion-related effects such as flushing, nausea, and chest discomfort when infused rapidly. Long-term safety data for supplementation are limited.

Educational summary of published research. Not dosing guidance or medical advice.

Sources

NAD+ metabolism and aging review · peer-reviewed review article (2018)search PubMed for NAD+ metabolism aging
NAD+ precursor human studies overview · peer-reviewed articles (2020)much human data concerns precursors (NR/NMN)

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