Compare
Nicotinamide Riboside vs NMN
The honest difference
Both raise NAD+ in people but have not shown real health gains. NR is a legal UK supplement; NMN is not yet allowed as one.
Peptide
Nicotinamide Riboside
Grade C: early / limited human data
Why people buy it
People take it as a supplement pill to slow ageing and feel more energetic. It is a form of vitamin B3.
Bottom line
It does raise NAD+ and seems safe. But for most people it has not shown a real health benefit.
- UK status
- Not a licensed medicine. Nicotinamide riboside chloride is an authorised novel food in Great Britain (following the EFSA 2019 assessment under Regulation (EU) 2015/2283, retained in UK law), permitted in food supplements for healthy adults, with a lower permitted intake for pregnant and breastfeeding women.
- Sport / WADA
- Not on the WADA Prohibited List. As a vitamin B3 derivative and NAD+ precursor it is not a banned substance; athletes are nonetheless responsible for supplement contamination risk.
Peptide
NMN
Grade C: early / limited human data
Why people buy it
People take it as a supplement pill to slow ageing and live longer. The body turns it into NAD+, a molecule cells use for energy.
Bottom line
It raises a number in your blood. Whether that slows ageing in people is still unknown.
- UK status
- NMN is not a licensed medicine in the UK. Its supplement status hinges on novel food rules: NMN was not widely eaten before 15 May 1997, so it is treated as a 'novel food' requiring Food Standards Agency authorisation before legal sale as a food supplement.
- Sport / WADA
- NMN is not specifically named on the WADA Prohibited List as of 2026.
Grades are about evidence in humans, not about whether something is right for you. Nothing here is dosing advice. Talk to a qualified clinician before any health decision.
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