65% of NMN Supplements Failed This Test
64% of NMN Supplements Failed Lab Testing. Here's the One That Publishes Every Result.
Written by Jonny Bradley, Co-Founder of Element 5
May 2026
The NMN purity crisis nobody talks about
In 2021, ChromaDex tested 22 top-selling NMN supplements from Amazon. 14 out of 22 contained less than 1% actual NMN. Three had zero. Ten contained the same unidentified substance.
If you're taking NMN right now, there's a 64% chance it contains virtually nothing.
Independent Lab Analysis — 22 NMN Brands Tested
14 / 22
failed — less than 1% actual NMN
Failed (<1% NMN)
Passed
3 brands had zero NMN detected
10 products contained the same unidentified substance
13 of 14 products claiming 500mg failed
Element 5 is the opposite. One ingredient. 500mg NMN per capsule. No fillers, no binders. Nothing But NMN. Every batch independently tested for purity, heavy metals, and microbials — with the actual third-party lab certificates published on our website, downloadable as PDFs, so you can check for yourself.
The supplement industry runs on trust. Element 5 runs on proof.
Why NMN matters: your NAD+ levels drop by half by age 55
NAD+ is what your cells use for energy, DNA repair, and recovery. Levels decline naturally with age — dropping by roughly half by the time you reach 55. NMN is the most direct precursor your body has.
But here's what the supplement industry doesn't want you to think about: purity determines whether any of this actually does anything. A capsule full of filler isn't a supplement. It's an expensive habit.
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1. One Ingredient. Nothing But NMN.
Pick up most NMN bottles and read the back label. You'll find rice flour, silicon dioxide, magnesium stearate, and a gelatin capsule listed before you even get to the NMN.
Element 5 has one ingredient: NMN. 500mg per capsule. No fillers. No binders. No flow agents. Those extras exist because they let manufacturers use faster, cheaper machines and pump out capsules at scale. They're not in there for you. They're in there to cut costs.
If your supplement has a paragraph of ingredients on the label, ask yourself who they're really for. Because it isn't you.
Nothing But NMN.
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2. Every Batch Independently Lab Tested
Most supplement brands test once — if they test at all — and use that single result to market "lab-tested purity" for years. Element 5 tests every single batch at a certified independent laboratory.
The results are published on the website. Not a marketing graphic. The actual lab certificate — downloadable as a PDF — showing the exact purity percentage for that specific production run. 99.9–100% NMN purity on every batch tested to date.
If a brand won't show you the lab report for the batch you're actually buying, that already tells you everything you need to know.
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3. The Study That Changed Everything
In 2021, ChromaDex tested 22 top-selling NMN products from Amazon using HPLC analysis at their ISO-accredited lab. The results should concern anyone taking NMN.
14 out of 22 products (64%) contained less than 1% of their claimed NMN. Three had zero NMN detected. Ten contained the same unidentified substance. All of them had thousands of five-star reviews.
A 2024 follow-up study by researchers in Singapore and the Netherlands confirmed the problem hasn't gone away. Element 5 publishes batch-level lab reports for every production run specifically so you never have to wonder. Element 5 is not one of the 64%.
Read the full ChromaDex study (PDF) →
4. 500mg Per Capsule — The Dosage Category Where Everyone Else Failed
Element 5 delivers 500mg of pure NMN per capsule — the maximum single-capsule dosage available. 60 capsules per bottle. 60 days of supply.
In the ChromaDex study, the 500mg dosage category was the worst performing of all. 13 out of 14 products claiming 500mg failed the purity test. Not almost every brand. Every brand but one. Element 5 is independently verified at 99.9–100% purity — in the exact category where the industry fell apart.
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Customers who switched to Element 5 notice the difference
★★★★★
This is magic in a bottle. Have been using for a while and the effect it has I feel so much more energy my skin is looking much more youthful I hit the two 60 bottles while in sale and will be sticking up while I can
— kathleenritchie31, verified buyer
★★★★★
Definitely got rid of my mid afternoon dip in energy, usually I'm ready for a nap but since taking this I'm good for the full day. Been taking it for about 3 weeks and noticed the boost in energy almost instant. I'm 50.
— Stuart Reynolds, verified buyer
5. Manufactured in the UK. Every Stage Tested.
Element 5 is manufactured in the UK under strict quality control. Every stage — from raw material sourcing to finished capsule — undergoes independent testing.
Most supplement brands won't tell you much about their product. That's not an accident. Element 5 is manufactured in the UK, tested for heavy metals, yeasts, moulds, and microbiological contaminants at every production stage.
Element 5 NMN is clean. Verified. Documented.
This isn't a white-labelled capsule dropshipped from an unknown overseas facility. You can see exactly what's in it, where it was made, and what it tested at.
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6. NAD+ Support You Can Actually Verify
NMN works by converting directly into NAD+ in the body. NAD+ is the molecule your cells use for energy production, DNA repair, and normal cellular maintenance. Levels decline naturally with age — and the science on NMN as a precursor is compelling.
But none of it matters if what's in your capsule isn't actually NMN. You can't support NAD+ production with rice flour and magnesium stearate. That's not a marketing claim — it's chemistry.
The purity of your NMN is the only thing that determines whether supplementation does anything at all.
Which is why over 35,000 people have made the switch to Element 5. Over 2.1 million servings sold. Nothing But NMN.
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7. Subscribe & Save — Up to 35% Off
NMN works best with consistent daily use. That's not a sales line — it's how cellular support actually functions. Element 5's Subscribe & Save makes consistency simple, and significantly cheaper the more you commit.
- 1 bottle/month — £27.99Save 20%
- 2 bottles/month — £24.49 eachSave 30%
- 3 bottles/month — £22.74 eachSave 35%
Choose your delivery frequency. Cancel anytime. No contracts, no catches.
At three bottles, that's £0.38 per day for independently verified, 99.9–100% pure NMN. Less than a coffee.
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8. 120-Day Money-Back Guarantee
Element 5 comes with a 120-day money-back guarantee. Try it for four full months. If you don't feel the difference, simply return what you have left and get every penny back.
Most NMN brands offer 30 days — because 30 days is long enough to make a return feel inconvenient, but not long enough to genuinely evaluate anything. 120 days is different. That's four full months to decide whether NMN is working for you. No questions. No forms. No hassle.
If we're confident enough in Nothing But NMN to offer 120 days, you should be confident enough to try it.
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ELEMENT 5
120 DAY
"Feel It In My Bones"
Guarantee
If we dropped the ball we'll make it right!
support@tryelement5.com
Independently Verified
The industry doesn't want you to see this comparison.
Based on the 2021 ChromaDex independent laboratory analysis of 22 top-selling NMN products:
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| Features | Element 5 | Most Amazon NMN |
|---|---|---|
| Published batch-level lab reports | ✅ | ❌ |
| Single ingredient (NMN only, no fillers) | ✅ | ❌ |
| 99.9–100% verified NMN purity | ✅ | ❌ |
| UK manufactured | ✅ | ❌ |
| 120-day money-back guarantee | ✅ | ❌ |
| Tested for heavy metals & contaminants | ✅ | ❌ |
| Independent third-party verification | ✅ | ❌ |
1,200+ verified five-star reviews. Here's what happens when NMN actually contains NMN.
"As a busy mum over 30, I was on the lookout for something that actually works. My energy was always low and I was getting unwell a lot. I've been taking Element 5 NMN for over 6 months now and the energy I feel is amazing. It's become part of my daily routine and I wouldn't go back."
— Rachel, verified buyer
"Been on Element 5 NMN for about 18 months now and honestly? It's been brilliant for my training. Running and gym work just feel easier to recover from. I don't get that wiped-out feeling for days anymore. The fact that I can see the actual lab reports sealed the deal for me."
— Ian, verified buyer
"I've noticed I'm less fatigued in the day and I don't have that 'mummy brain fog' as much as I had with the first one and I'm putting it down to NMN and Eternal Resveratrol."
— Lena, verified buyer
If you're taking NMN, make sure it's actually NMN.
The ChromaDex study showed that 64% of NMN brands on the market contained virtually no active ingredient. A 2024 follow-up confirmed the problem is getting worse, not better. Since the study began circulating on social media, one question keeps coming up: which brands actually passed?
If you've tried NMN before and felt ripped off, you probably already know the answer. The problem was never NMN. It was what was in your capsule.
Over 35,000 customers have made the switch to Element 5. 1,200+ verified five-star reviews. Every batch independently lab tested. One ingredient. Published results. UK manufactured. 120-day guarantee.
You've been misled by the supplement industry long enough. Element 5 is a dedicated NMN brand that shows you exactly what's in the bottle, what's in every bottle — before you buy it.
Nothing But NMN.
SEE THE LAB RESULTS — THEN CLAIM YOUR DISCOUNT →
⚠️ UPDATE: As of May 2026
The ChromaDex purity study has been widely shared across social media, and demand for independently verified NMN has surged as a result. We're currently fulfilling orders normally, but Subscribe & Save customers receive priority dispatch and the largest available discounts.
If you've been sitting on the fence, now is the time. Order today and get UP TO 35% OFF.
This offer is available exclusively at tryelement5.com and is not available through Amazon or third-party retailers.
Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking any medications, or under medical supervision, please consult a doctor before use. Results may vary. This product is not intended to diagnose, treat, cure, or prevent any disease.