Longevity / Research index
NAD+
NAD stands for nicotinamide adenine dinucleotide. The NAD+ form participates in oxidation and reduction reactions in metabolism. It is a nucleotide coenzyme rather than a peptide or an amino-acid chain. Its biochemical identity is distinct from the format in which a catalog lists it.
Names used in the literature: NAD · NAD+ · Nicotinamide adenine dinucleotide · Nicotinamida adenina dinucleótido
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NAD+ 500 mg
- Presentation
- 500 mg
- Catalog reference
- PMX-NAD-500
Availability and documentation await confirmation. Listed quantities identify catalog presentations, not instructions for use.
Identity includes the chemical form
ChEBI identifies NAD+ as the oxidized form of this coenzyme and documents its structure. That precision matters: a broad category called NAD does not replace identification of the material. A molecule’s role inside cells also does not establish that an externally supplied presentation produces a particular clinical benefit.
Sources: [1]
What the human pilot measured
A 2019 pilot study tracked NAD+ and metabolites in plasma and urine during and after an infusion. Its purpose was to describe the compound’s metabolic fate. Those measurements do not establish longer lifespan, disease prevention, or a sustained improvement in energy or cognition. The endpoint must remain attached to the claim.
Sources: [2]
Precursors address a different question
The study by Trammell and colleagues investigated nicotinamide riboside, or NR, as an NAD+ precursor in mice and humans. Metabolome changes following NR are not a trial of an NAD+ vial. Separating the substance, formulation and measured endpoint prevents findings from different interventions from being treated as interchangeable.
Sources: [3]
Questions about this reference
Are NAD+ and NR names for the same product?
No. NR is a precursor investigated in relation to NAD+ metabolism. A result obtained with NR does not automatically establish the effects of administering NAD+ or equivalence between the respective presentations.
Does the infusion study demonstrate an anti-aging effect?
No. Its central question was metabolic and exploratory. It did not test lifespan extension, and it does not turn plasma or urine concentrations into a clinical longevity outcome. That distinction applies even when the underlying biochemistry is relevant to aging research.
Sources and original reading
- ChEBI:15846 — NAD(+)
- A Pilot Study Investigating Changes in the Human Plasma and Urine NAD+ Metabolome During a 6 Hour Intravenous Infusion of NAD+
- Nicotinamide riboside is uniquely and orally bioavailable in mice and humans
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