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NAD+
The burned-in captions and transcript carry the scientific claims and their limitations. The visuals are conceptual illustrations, not validated molecular models or experimental images. The video has no voice or audio. The full explanation is visible on screen; optional accessible captions are available in the player.
Read every result in its study context. A cell experiment, animal model, exploratory analysis and controlled human trial answer different questions.
Prepared 05 November 2026. Regulatory status is jurisdiction- and date-specific. No claim of specialist review or exhaustive evidence coverage.
Transcript
NAD+ | Coenzyme, not peptide
NAD+ is a coenzyme involved in cellular energy reactions. Its essential biological role does not, by itself, establish benefits from adding more. [1]
HUMAN PILOT | 11 participants
A 2019 pilot study assigned eleven men to NAD+ or saline and tracked blood and urine chemistry around a six-hour research infusion. [1]
Measured: circulating metabolites
Researchers observed changes in NAD+ and related metabolites. That answers questions about what happens to the compound, rather than whether people live longer. [1]
Clinical benefit remains a separate question
The study was small and brief. It cannot establish lasting improvements in energy, cognition or aging, or reliably detect uncommon and delayed harms. [1]
Sources and context
These linked sources support the evidence distinctions in this short overview. This is not a systematic review, endorsement or treatment recommendation.
- Grant et al. (2019): A Pilot Study Investigating Changes in the Human Plasma and Urine NAD+ Metabolome During a 6 Hour Intravenous Infusion of NAD+ →Eight NAD+ recipients and three saline controls; short-term plasma and urine metabolites, not longevity or cognitive efficacy.
