NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in every living cell, playing a central role in energy metabolism and cellular signaling. It has become one of the most actively studied compounds in longevity and mitochondrial research over the past decade, largely because NAD+ levels are known to decline with age in a range of biological models.

This guide covers what NAD+ is, why it's such a heavily researched compound, and what to look for when sourcing it for laboratory use.

What is NAD+?

NAD+ is a coenzyme central to redox reactions within cells, meaning it plays a direct role in how cells convert nutrients into usable energy. It exists in two forms — an oxidized form (NAD+) and a reduced form (NADH) — that cycle constantly as part of normal cellular metabolism.

Why NAD+ Is a Major Research Focus

• Mitochondrial research — NAD+ is directly involved in mitochondrial energy production pathways, making it central to research on cellular energy metabolism.
• Longevity and aging research — declining NAD+ levels with age have made it a frequent subject in research examining age-related cellular decline.
• DNA repair pathway research — NAD+ is a required cofactor for certain enzymes involved in DNA repair processes, which has driven research interest in this area.
• Sirtuin activity research — NAD+ availability is closely linked to sirtuin protein activity, a pathway frequently studied in longevity science.

NAD+ Purity: What to Check Before You Buy

Sourcing NAD+ for Research in Australia

1. Request a batch-specific COA rather than relying on general purity claims.
2. Confirm whether the product is supplied as lyophilised powder or a pre-mixed solution, since handling requirements differ.
3. Check for documented storage guidance, given NAD+'s sensitivity to temperature and light.
4. Prioritize Australian-based suppliers for faster delivery and cold-chain reliability.
5. Ensure the product is clearly labeled for laboratory research use only.

Interested in comparing purity data before you order? View our HPLC-tested NAD+ listing →

Why Handling Matters as Much as Purity

NAD+ is a compound that can degrade relatively quickly if it's exposed to heat, light, or improper storage — even if the original batch tested at high purity. This makes supplier transparency around storage and shipping practices just as important as the initial COA when evaluating where to source it.

Questions about NAD+ formulation, storage, or batch documentation? Get in touch with our team →

Frequently Asked Questions

1. What role does NAD+ play in cellular research?

NAD+ is a coenzyme central to energy metabolism, DNA repair pathways, and sirtuin activity, making it a key subject in mitochondrial and longevity research.

2. Why is NAD+ associated with aging research? 

NAD+ levels are known to decline with age in various biological models, which has made it a frequent subject in age-related cellular decline research.

3. How should NAD+ be stored for research use?

It should be kept frozen or refrigerated, protected from light and heat, following the supplier's specific storage documentation.

4. How can I verify the purity of a NAD+ batch?

Request an HPLC test result and a batch-specific Certificate of Analysis (COA) from your supplier before purchasing.

5. Is NAD+ legal to purchase in Australia for research purposes?

Yes, when supplied strictly for laboratory research use with proper labeling, in accordance with relevant regulations. It is not approved for human or veterinary use.