Best NMN Supplements: Full UK Market Purity & Cost Review
UK NMN Price and Quality Comparison (2026)
| Brand | Monthly Cost | Dose | Capsule Type | Published CoA |
|---|---|---|---|---|
| Longevity Formulas (3-month bundle) | £16.66 | 500mg | Delayed-release HPMC | Yes |
| Longevity Formulas (single bottle) | £20.00 | 500mg | Delayed-release HPMC | Yes |
| VivaNMN | £29.99 | 500mg | Standard capsule | Not published |
| DoNotAge | ~£27.50 | 500mg | Standard capsule | Partial |
| NMN Bio | ~£29.00 | 500mg | Standard capsule | No |
| Charava | ~£35.00 | 500mg | Standard capsule | Not named |
| British Supplements | ~£45.56 | 724mg | Standard capsule | No |
| NMN Bio (Dr Seranova) | ~£60.00 | 500mg | Standard capsule | No |
Our 3-month Pure NMN bundle at £49.99 (£16.66/month) is the lowest monthly cost of any UK brand offering delayed-release capsule technology with a fully published Certificate of Analysis. No other brand in this price range offers both.
"The capsule determines how much of the ingredient actually reaches your system. A 500mg dose in a delayed-release capsule is not the same as 500mg in a standard capsule that dissolves in the stomach. We built our formulation around that distinction from the start." — Mat Stuckey, Founder, Longevity Formulas
Why the Capsule Type Matters
NMN is absorbed in the small intestine. Standard capsules dissolve in the stomach, where acidic conditions can degrade the ingredient before it reaches absorption. Delayed-release HPMC capsules pass through the stomach intact and dissolve in the intestine, protecting the full 500mg dose.
Every brand in the table above except Longevity Formulas uses a standard capsule. That is a formulation shortcut that affects real-world value — not just marketing. Read the full breakdown: The problem with most NMN supplements — why delayed-release matters.
Brand-by-Brand Notes
VivaNMN sells 30 capsules for £29.99 — a one-month supply — making it 80% more expensive per month than our bundle and 50% more than our single bottle. Standard capsule, no delayed-release technology.
DoNotAge has strong community backing and high purity claims (99.8%). At ~£27.50/month, you are paying a brand premium for a standard capsule delivery format.
Charava is a well-regarded brand with solid purity standards. At ~£35/month with a standard capsule, you are paying 75% more per month than our bundle for a product that offers less protection through the stomach. See Longevity Formulas vs VivaNMN for a broader look at the standard-capsule market.
British Supplements charges approximately £91.12 for 60 capsules (2 months), making it 127% more expensive than our single bottle for the same supply duration. Their 724mg dose does not close that gap — published trials have not established that doses above 500mg produce proportionally greater NAD+ elevation. Full breakdown: Longevity Formulas vs British Supplements NMN.
Our Products
| Product | Price | Supply | Monthly Cost |
|---|---|---|---|
| Pure NMN 500mg | £39.99 | 2 months (60 caps) | £20.00 |
| 3-Month NMN Bundle | £49.99 | 3 months (90 caps) | £16.66 |
| NMN Complex | £44.99 | 1 month (90 caps at 3/day) | £44.99 |
Our Pure NMN 500mg contains two ingredients: beta-Nicotinamide Mononucleotide and the HPMC capsule shell. No fillers, binders, or flow agents. Purity is independently verified at 98%+ with a published Certificate of Analysis for every batch.
The NMN Complex is a different product: each serving of 3 capsules delivers 500mg NMN alongside TMG, trans-resveratrol, pterostilbene, quercetin, and vitamin B12 in a single daily stack. Designed for those who want comprehensive NAD+ support without managing multiple products.
"I have taken our own NMN at 500mg every morning for over two years. The HRV data I track across that period is meaningful enough that stopping is not something I consider. That is partly why we prioritise bioavailability rather than cutting costs on capsule technology." — Mat Stuckey, Founder, Longevity Formulas
What to Expect
NMN is not a stimulant. It supports NAD+ production at the cellular level. Allow 4 to 8 weeks before assessing your response. Most people who notice changes report improvements in energy stability, recovery, and sleep quality. Individual responses vary significantly.
Take 1 capsule daily with water, ideally in the morning. The delayed-release capsule can be taken with or without food. Our complete dosing guidance is in How much NMN should I take?
NMN is classified as a novel food in the UK, currently under FSA review, and is legal to purchase during that period. Full context: UK NMN regulations.
Frequently Asked Questions
What purity is Longevity Formulas NMN? Independently verified at 98%+ pharmaceutical grade, with a published Certificate of Analysis for every batch. Viewable before purchase at longevityformulas.co.uk.
Why does the capsule type matter? NMN is absorbed in the small intestine. Standard capsules dissolve in the stomach where acid can degrade the ingredient before it reaches absorption. Delayed-release capsules dissolve in the intestine instead, protecting the full dose.
How does the pricing compare to competitors? At £16.66/month on our 3-month bundle, we are the cheapest UK option offering delayed-release technology with a fully published CoA. The next comparable monthly cost is DoNotAge at ~£27.50 — with a standard capsule and partial testing disclosure.
Is NMN legal in the UK? Yes. NMN is a novel food under FSA review and is available for legal purchase and sale during that period.
How long before I notice results? Allow 4 to 8 weeks of consistent daily use. NMN is not a stimulant and does not produce immediate effects.
NMN is a food supplement, not a medicine. It is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting, particularly if pregnant, breastfeeding, or taking medication.
