If you’ve been anywhere near a wellness corner of the internet in the past five years, you’ve heard about NAD+. It’s the molecule at the centre of a lot of the longevity conversation, often described in terms that promise more than the research can deliver. This is the plain-English version.
What NAD+ actually is
NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that sits at the centre of two cellular jobs:
- Energy. NAD+ is one of the molecules that shuttles electrons through mitochondria as cells make ATP — the body’s usable energy currency.
- Repair and signalling. NAD+ is the fuel for a family of proteins called sirtuins (SIRT1, SIRT3, and so on), which are involved in regulating cellular repair pathways.
That’s the simple version. The interesting part is that NAD+ levels in tissue appear to decline with age. The question that’s driving most of the current research is: if you restore NAD+ levels, what happens?
Why people take NR, not NAD+ directly
You can’t usefully supplement NAD+ directly. The intestinal barrier doesn’t allow it through intact. So research focused on precursors — smaller molecules that the body can absorb and then convert into NAD+.
The two most-studied precursors are nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN). NR is what we use in our NAD+ Capsules. It has the larger body of published human research; it crosses the blood–brain barrier; and it has been shown in clinical trials to raise NAD+ levels in human blood.
NMN is also being studied, with promising early results, but the human evidence base is smaller and the regulatory status in some markets is still being worked out.
What the research suggests
Here’s the careful version of what we know:
- NR supplementation raises NAD+ levels measurably in human studies. This is well-established.
- Higher NAD+ improves mitochondrial efficiency in animal models and cell-culture work. Also well-established.
- Whether raising NAD+ in humans leads to specific subjective or clinical outcomes — better energy, better cognitive function, slower ageing — is still being studied. The early signals are interesting but the definitive human data isn’t there yet.
What we won’t say: that NR will slow or reverse ageing. That claim requires multi-decade clinical data that no NAD+ precursor has, and is unlikely to have for years.
What we will say: NR is the kind of supplement many people take as part of a long-term cellular-health protocol, on the basis that NAD+ restoration is well-evidenced biochemistry even if the downstream subjective effects are still being studied. That’s a reasonable position. It’s also reasonable to wait for more data. Both are defensible.
What to expect, realistically
Effects, where people report them, build over weeks rather than days. Many people don’t notice a subjective change at all — which is consistent with how the molecule works. Cellular efficiency isn’t something you feel directly. People who track biomarkers (NAD+ blood levels, for instance) can see the change measurably; people who track how they feel may or may not.
Who shouldn’t take it
If you’re pregnant, breastfeeding, on prescription medication, or under medical care, speak to a clinician before starting any new supplement. NR is well tolerated in clinical studies, but interactions with specific medications are possible.
Our take
We make NAD+ Capsules with 500mg of nicotinamide riboside, alongside trans-resveratrol and quercetin — two polyphenols studied alongside NR in cellular research. Researched precursors, researched doses, third-party tested. No promises beyond what the evidence supports.
This article describes ingredient research and is not a recommendation of dose or use. Food supplements are not medicines and are not intended to diagnose, treat, cure, or prevent any disease.
