CELLULAR · MADE WITH UTHEVER® NMN
GroovyNMN Pure NMN | 500mg Capsules
500 mg nicotinamide mononucleotide per serving. One capsule a day. Food supplement.
Choose your size Cost per day shown
Your batch, tested before it shipped
- Batch
- NMN250310
- Identity
- β-nicotinamide mononucleotide
- NMN purity
- 99.6%
- Heavy metals
- Pass
- Tested by
- Independent laboratory
Support Healthy Aging with GroovyNMN 500mg Capsules.
Our high-strength 500mg NMN capsules are designed to support natural NAD+ levels in your body. NMN is a naturally occurring form of vitamin B3 that may help promote cellular energy and overall vitality
One capsule daily with water, with or without food. Most people take it in the morning. Do not exceed the stated dose.
Food supplements should not replace a varied and balanced diet or a healthy lifestyle. If you are pregnant, breastfeeding, taking prescribed medication or under medical supervision, speak to your GP or pharmacist before starting anything new. Keep out of reach of young children.
Per capsule: 500 mg nicotinamide mononucleotide (Uthever® NMN).
To be completed from the printed label: capsule shell, any anti-caking or bulking agent, and the full allergen statement. No nutrient reference value has been established for NMN.
Free UK delivery on every order, no minimum spend, dispatched from the UK. Orders placed before 2pm on a working day go out the same day, sent via Royal Mail Tracked.
30-day money-back guarantee on your first opened bottle. Finish it, and if it wasn't for you we refund it — you do not need to send it back.
What is actually in the bottle
One active ingredient, named, at a stated dose
No proprietary blend, no "complex", no list of things at doses too small to matter. If it is in here, the amount is on the label.
Nutrition information
Capsule shell is made from vegetable cellulose. No nutrient reference value has been established for NMN.
Food supplement. Not a substitute for a varied and balanced diet or a healthy lifestyle. Do not exceed the recommended daily dose.
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One capsule, daily
500 mg with water, morning or evening, with or without food. There is no loading phase and nothing to cycle.
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Give it months, not days
The published human trial ran for 60 days. That is the honest window, and it is why the 90-capsule pack exists — not as an upsell, but because it matches how the research was actually done.
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Check your batch
The batch number printed on your bottle matches a certificate published on this site. You can read the purity result for the powder in your own hand.
The proof inventory
World's 1st
Clinically proven bulk NMN ingredient brand — Uthever®
Published human trial, 2022
500 mg
Per serving, stated on the label — no proprietary blend
Product label
99.6%
NMN purity in the current batch, independently verified
Batch NMN250310
ISO 9001:2015
Certified manufacturing facility
Held by the facility, not by us
HACCP
Food safety certified across production
Held by the facility, not by us
66 adults
Randomised, double-blind and placebo-controlled, over 60 days
Frontiers in Aging, 2022
The science, in plain English
What NAD+ is, and why it starts to matter around 40
NAD+ is a coenzyme your cells use to turn food into usable energy and to run DNA repair. It is not obscure — it is in every cell you have, and without it you would not last a day.
Levels fall as we age. A 2018 review in Cell Metabolism set out the evidence for that decline and the mechanisms behind it.1 NMN is a precursor: your body converts it into NAD+. That is the whole logic of taking it.
The ingredient in this bottle has a published human trial behind it: 66 adults aged 40 to 65, randomised, double-blind and placebo-controlled, over 60 days, and registered before it began.2 That trial ran at 300 mg a day. This product provides 500 mg, and we state both figures wherever the trial is mentioned rather than letting one stand in for the other.
Where it gets more interesting for our customers: NAD+ decline appears to accelerate around the same life stage as perimenopause, and mitochondrial function is bound up with the fatigue, brain fog and slow recovery that women in their forties are routinely told is "just hormones". That is a research direction, not a promise, and we are not going to dress it up as one.
Illustrative only. A schematic of the decline described in Yoshino et al., 2018 — not our data, and not a measurement of any individual. We would rather show you a labelled diagram than a chart that implies a precision nobody has.
What the evidence doesn't yet show
Raising blood NAD+ is not the same as living longer, or feeling better. The human trials measure the first, not the second.
The trials so far are small — dozens of participants, not thousands — and short, measured in weeks and months rather than years.
The published trial ran at 300 mg a day. This product provides 500 mg. A trial at one dose does not validate a different one, and we are not claiming it does.
There is no published human trial showing NMN slows human ageing. Anyone telling you otherwise is selling something.
We will update this section when that changes, in either direction.
Specification
What you are actually comparing
Price is the last row, not the first. If a bottle is cheaper, the fair question is what was cut — so here is every variable that costs money, and where ours sits.
| Variable | Groovy Supps Pure NMN | Premium longevity brand | Typical UK NMN seller |
|---|---|---|---|
| NMN form | Uthever® — trademarked, clinically studied | Often Uthever®, undisclosed | Generic bulk, unnamed |
| Published human trial on the exact ingredient | One — 66 adults, 60 days, randomised and placebo-controlled | Several | None |
| Trial registered before it began | Yes — clinicaltrials.gov | Sometimes | No |
| Facility certification | ISO 9001:2015 · HACCP | Usually claimed, seldom evidenced | Unknown |
| Purity, third-party verified | 99.6% in the current batch | Varies; certificate rarely published | Unverified |
| Certificate of analysis for your bottle | Published, linked from this page | On request | None |
| Says what the evidence does not yet prove | Yes | Rarely | No |
| Dose per serving | 500 mg | 250–500 mg | Varies by batch |
| Cost per day | £0.72 – £1.00 | £2.00 – £3.00 | £0.50 – £1.00 |
Cost per day is the one-time price divided by the pack size: £1.00 on the 30-capsule pack, £0.83 on 60 capsules, £0.72 on 90.
Traceability
Where this bottle actually comes from
Five steps between the manufacturing facility and your bathroom shelf. Here is every one of them.
Manufacture
Our capsules are made at a facility certified to ISO 9001:2015 for quality management and holding HACCP food safety certification. Those certifications are held by the facility, not by Groovy Supps.
The ingredient
Uthever® NMN — the No.1 trademarked NMN ingredient brand in the United States (Euromonitor, 2024), and the only NMN we could find with a published human trial behind it.
Encapsulation
500 mg per capsule, with the full ingredient list on the label. The published trial ran at 300 mg, and that is the figure we quote.
Batch testing
Independently tested for identity and purity, microbiological contamination and heavy metals. A certificate is issued for every batch — the current one is NMN250310.
UK dispatch
Stored and dispatched from the UK. Free delivery on every order, no minimum spend, with orders before 2pm going out the same working day.
Verified reviews
What customers say — carefully chosen
A selection of genuine customer reviews for our NMN.
Groovy Supps NMN has been a game-changer for me. After just a few weeks of taking the capsules, I’ve noticed a huge boost in my energy levels and overall mood.
I’ve been using GroovyNMN for a few weeks now, and I’m really impressed with the results! This supplement offers 500 mg of NMN (Nicotinamide Mononucleotide) per capsule with 99% purity, which is key for boosting NAD+ levels and supporting overall energy and cellular health.
Really happy with this product, first month I’ve noticed that my brain fog has reduced so I’ve bought 2 more bottles!
Subscribe & save
The science says months, so the subscription is built for months
The published trial ran for 60 days. A subscription you can leave in one click is the honest way to sell something measured over months.
Deliveries every 30 days. Cancel, skip or change the frequency at any time.
Skip any delivery
One click, no email and no phone call. Pause or cancel the same way.
A lower price, ongoing
Not a first-order trick. The subscription price stays lower for as long as you stay.
Certificate on request
Send us the batch number on your bottle and we will send the certificate for that exact batch.
Free UK delivery
Every order, no minimum spend, tracked as standard.
30-day money back
Open the bottle and try it. If you are not getting on with it we refund you, and you do not need to send it back.
First access
New products and new formulations reach subscribers before anyone else.
Before you buy
The questions we actually get about this bottle
Why is yours cheaper if it's the same ingredient?
Because we are not paying for the markup. Uthever® bulk NMN goes to more than 110 consumer brands; the difference between a £30 bottle and an £80 one is very rarely the powder. It is retail margin, agency fees, celebrity founders and packaging. We publish the certificate so you can check the ingredient rather than take our word for it.
Why 500 mg when the trial used 300 mg?
Because 500 mg is a common commercial serving and it is what is on our label. We want to be exact about what that does and does not mean: the published trial was run at 300 mg a day, and a trial at one dose does not demonstrate anything about a different one. We state both figures wherever the trial is mentioned, and we do not present the higher dose as validated by the lower one.
How long before I notice anything?
Honestly: we don't know, and neither does anyone selling you NMN. The human trials measure blood NAD+ over 30 to 60 days, not how people feel. That is why the 90-capsule pack exists, and why the guarantee runs 30 days from your first opened bottle rather than 14.
What exactly is tested, and by whom?
Every batch goes to an independent third-party laboratory with no commercial interest in the result. They confirm NMN identity, verify purity, and screen for heavy metals and microbiological contamination. The current batch is NMN250310 at 99.6% purity, and its certificate is linked from this page — not available on request, published.
Who is this actually for?
Mostly women in their late thirties to fifties who have noticed that recovery takes longer than it used to, and who want to understand the science rather than be sold a feeling. The molecules aren't gendered. The way this category talks about them mostly is.
Can I take it with other supplements or medication?
Food supplements should not replace a varied and balanced diet or a healthy lifestyle. If you are pregnant, breastfeeding, taking prescribed medication or under medical supervision, speak to your GP or pharmacist before starting anything new.
Does it need to be kept in the fridge?
No. Store it in a cool, dry place out of direct sunlight. The batch number and best-before date are printed on the bottle.
What if it isn't for me?
Thirty days, first opened bottle, money back. You do not need to send an unopened bottle back to qualify — the point of the guarantee is that you can actually try it.