NMN 500mg vs 1000mg: Which Dose Is Right?
NMN 500mg vs 1000mg
The two most common NMN dose tiers, compared on label facts only: NMN per serving, serving size and pack — and where each dose sits against the 250–900mg a day used in the published human trials. No personalised dosing and no claim that either dose does more.
Two tiers, one trial range.
There is no official recommended intake for NMN and no authorised health claim at any dose, so neither tier is "right" in a way we can claim. The useful difference is where each sits against the research: 500mg is inside the 250–900mg a day used in the efficacy trials; 1000mg is just above it, and below the 1250mg used in a four-week safety study.
NMN is widely sold in the UK but its position is not settled: a GB novel food application for β-NMN (FSA reference RP-2116) is under assessment by the Food Standards Agency, and EFSA published a positive safety opinion in the EU in 2026 with formal authorisation still pending. No authorised UK or EU health claim exists for NMN at any dose, so this page compares label facts and study doses only.
500mg vs 1000mg, side by side.
Both are single-ingredient NMN products. The differences are the amount of NMN in each daily serving, how many capsules make up that serving, and cost per serving — which changes, so it lives on the product pages and in our NMN cost calculator and UK NMN price index.
The research gives context, not a verdict. The efficacy trials tested 250mg (three trials) and 300, 600 or 900mg (one dose-ranging trial). None tested 1000mg as an efficacy dose; the nearest higher figure is the 1250mg four-week safety study. Small, short trials cannot tell you that a higher dose does more — and no claim to that effect is authorised.
If you also want NMN alongside other ingredients, the compare NMN table shows every formula's NMN dose, including NMN + TMG and NMN Complete at 750mg.
The comparison table.
Label facts as stated on each product listing, plus where each dose sits against the published study doses.
| Factor | NMN 500mg | Pure NMN 1000mg |
|---|---|---|
| NMN per serving | 500mg | 1000mg |
| Serving | 2 capsules | See label |
| Pack | 60 capsules · 30 days | 60 vegan capsules |
| Other actives | None — single ingredient | None — single ingredient |
| vs 250–900mg efficacy-trial range | Inside | Just above |
| vs 1250mg safety study | Below | Below |
| Product | NMN 500mg | Pure NMN 1000mg |
Study doses describe what trials gave participants, not a recommendation or a promise of any effect. Every Vitality batch is tested by an ISO/IEC 17025-accredited laboratory: quality & testing. Full trial details: NMN clinical trials · research references.
What daily amounts research used.
250mg a day. Yoshino et al. (Science, 2021) — 25 postmenopausal women with prediabetes, 10 weeks. Igarashi et al. (npj Aging, 2022) — 42 healthy older men, 12 weeks. Kim et al. (Nutrients, 2022) — 108 adults aged 65+, 12 weeks, morning vs evening arms.
300, 600 or 900mg a day. Yi et al. (GeroScience, 2023) — 80 healthy middle-aged adults, 60 days, three dose arms against placebo.
1250mg a day. Fukamizu et al. (Scientific Reports, 2022) — 31 healthy adults, four weeks, designed as a safety study.
We describe these studies by design only, not by outcome. The 500mg tier sits inside the efficacy range; the 1000mg tier sits between the top efficacy dose and the safety-study dose. For timing questions, see when to take NMN; for tolerability, NMN side effects.
No official recommended intake exists for NMN. A study dose is not a recommendation.
Follow the label.
We do not advise on how much NMN you personally should take or on changing your dose. Each product carries its own directions, and those are the ones to follow:
Choose by stated serving. NMN 500mg provides 500mg per two-capsule serving; Pure NMN 1000mg provides 1000mg per serving. Pick the product whose serving you want rather than adjusting capsule counts.
Do not exceed the stated daily dose, and do not combine NMN products to go beyond it.
Check the NMN is genuine. A dose only means something if the product contains it — see our genuine NMN method.
Speak to a professional first if you take medication, are pregnant or breastfeeding, or are under medical supervision.
If you are also deciding on format — capsule, powder or liposomal liquid — our format comparison covers that side.
Pick your tier.
We make and sell both. UK manufactured, and every batch tested by an ISO/IEC 17025-accredited laboratory.
Dose comparison FAQ.
Last reviewed 5 October 2026 by the Vitality Supplements Editorial Team, written to our editorial standards. We make and sell both products on this page, which is why it compares label facts and study doses rather than recommending a dose. First published 28 July 2026; rebuilt 5 October 2026 with verified trial doses, personalised dosing advice removed, and the UK regulatory status added.
Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the stated recommended daily dose. NMN is not yet an authorised novel food in Great Britain (application RP-2116 under assessment). No authorised UK or EU health claims exist for NMN, and no medicinal, disease or anti-ageing claims are made. Not suitable for children. Consult a healthcare professional before use if pregnant, breastfeeding, taking medication or under medical supervision. General information, not medical advice. See our disclaimer · Contact