There are now dozens of NMN supplements you can buy in the UK. The cheapest is about £15 a month. The most expensive is over £100. They claim to do similar things, with similar doses, on similar-looking labels.
We make NMN. We're not going to pretend we're an unbiased reviewer. What we are going to do is lay out the framework we'd use to buy NMN if we were starting from scratch, walk through what actually matters in each category, and show you where we land. You can apply the framework to any brand on the market — including ours.
The 6 things that matter when buying NMN in the UK
- Raw material provenance — where does the NMN powder actually come from?
- Third-party testing — does the brand show you a certificate of analysis?
- Manufacturing standard — GMP or not?
- Dose clarity — is the dose per serving clear, and is it in the studied range?
- Purity — fillers, magnesium stearate, "proprietary blends"?
- Total cost — not just sticker price, but cost per gram of actual NMN.
1. Raw material provenance
NMN is a chemical. Different chemical suppliers make it to different purity standards. The bag of NMN powder that goes into a £15 bottle is almost certainly not the same as the bag in a £45 bottle.
What to look for: A named raw material (e.g. Uthever®) and an origin you can trace.
Red flag: A brand that won't name its source. This is the single most common pattern we see in cheap own-label NMN.
Where Ivvion sits: We use Uthever® by Effepharm — the raw material used in several published human trials. We're happy to share the CoA on request.
2. Third-party testing
The supplement company tests its own product, but the only test that should reassure you is one done by an independent lab.
What to look for: A third-party CoA showing identity, purity (≥99% is standard for premium), and contaminant testing — per batch, not just an old CoA from years ago.
Red flag: "Lab tested" with no document, or a single CoA from 2021 still on the website in 2026.
Where Ivvion sits: Every batch third-party tested. The CoA is available — email us and we send it.
3. Manufacturing standard
What to look for: Manufactured in a GMP-certified facility, ideally in the UK, EU, US, Japan, Australia, or Canada.
Red flag: No mention of manufacturing location. White-labelled products with no traceability.
Where Ivvion sits: Made in the UK to GMP standards.
4. Dose
The doses used in published human NMN research range from 250 mg/day to 1,200 mg/day, with 500 mg/day being most common. Most informed users settle somewhere in 500–1,000 mg/day.
What to look for: A daily dose in the studied range, stated clearly on the label.
Red flag: A "proprietary blend" that says "NAD+ complex 500 mg" but doesn't say how much is actually NMN.
Where Ivvion sits:
- NMN Essential: 500 mg/day (the most-studied dose)
- NMN Elite: 1,000 mg/day (the higher end, with liposomal delivery)
5. Purity
What to look for: An "other ingredients" list of one or two items — ideally just the capsule shell. HPMC (vegetable) capsule shells if you care about vegan.
Red flag: A long list of fillers or anything you can't pronounce that isn't the active.
Where Ivvion sits: HPMC capsule shell. Nothing else. Vegan and gluten-free.
6. Cost per gram of NMN
Sticker prices are misleading. The right comparison is cost per gram of actual NMN.
To calculate: (price ÷ servings per bottle) ÷ (NMN per serving in grams)
Example:
- A £40 bottle with 30 servings at 500 mg = £40 / 30 / 0.5g = £2.67 per gram
- A £25 bottle with 30 servings at 250 mg = £25 / 30 / 0.25g = £3.33 per gram
The "cheaper" bottle is actually 25% more expensive on a per-gram basis — and you're getting half the dose.
Putting it together
| Criterion | Good | Better | Best |
|---|---|---|---|
| Raw material | Unnamed | Named | Published-trial raw material (e.g. Uthever®) |
| Testing | None | Brand's own lab | Third-party CoA per batch |
| Manufacturing | Unspecified | GMP overseas | GMP in UK / EU / US / Japan |
| Dose | Below 250 mg | 250–500 mg | 500–1,000 mg in studied range |
| Purity | Long fillers list | Short fillers list | Just capsule shell |
| £/g NMN | >£4 | £2.50–£4 | <£2.50 on subscription |
Ivvion is built to hit the "Best" column in every row. We'd argue you should hold every brand to that standard, including ours.
Which Ivvion NMN should you buy?
Choose NMN Essential if:
- You're new to NMN and want a clean, well-sourced starter
- 500 mg/day at the most-studied dose is what you want
- You want the simplest, most evidence-anchored option
Choose NMN Elite if:
- You want a higher daily dose (1,000 mg)
- You've taken NMN before and want to step up
- You want our LipoAvail™ liposomal delivery format
Most new customers start with Essential. You can swap to Elite at any time on Subscribe & Save.
What if I don't want to buy from Ivvion?
That's fine. Apply the 6-point framework to whichever brand you're looking at. If you can't get clear answers on points 1–5, walk away.
Don't get oversold by words like "premium" or "ultra-pure" without evidence, logos for tests that aren't actually third-party labs, influencer codes without traceable lab results, or pricing that looks suspiciously low.
FAQ
Is the most expensive NMN automatically the best? No. Some premium pricing reflects raw material quality and testing; some is just brand markup.
Are there any UK-made NMN supplements? Yes — including Ivvion. UK-made matters for returns, customs, and oversight.
Where can I see real customer reviews? On Trustpilot. We link to ours from every page on ivvion.com.
Can I just buy NMN raw powder? Yes, but you lose the convenience of a measured dose and can't easily verify purity.
Ready to buy?
NMN Essential — 500 mg/day, Uthever®
NMN Elite — 1,000 mg/day, liposomal
Subscribe & Save — 15% off every order
Or keep learning:
The full NMN UK guide | NMN vs NR | What dose of NMN should I take?
Food supplement. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle.