Best NAD+ Supplement in the UK (2026): Why NMN Is the Most Effective Precursor
One of the fastest growing searches in longevity right now is:
“What is the best NAD+ supplement?”
If you're looking to support energy, healthy ageing, recovery and cellular health, NAD+ plays a central role. But here’s the key thing most people don’t realise:
You don’t take NAD+ directly. You take a precursor.
In this guide, we’ll break down:
- What NAD+ is and why it matters
- The difference between NMN and NR
- Why NMN is considered the superior precursor
- Third-party purity testing results
- Real NAD+ blood test results from My Dailys co-founder Maxwell
What Is NAD+ and Why Is It Important?
NAD+ (Nicotinamide Adenine Dinucleotide) is a coenzyme found in every cell of your body. It plays a critical role in:
- Energy production (ATP creation)
- DNA repair
- Mitochondrial function
- Cellular resilience
- Healthy ageing pathways
The problem? NAD+ levels naturally decline as we age.
Lower NAD+ levels are often linked with fatigue, slower recovery and reduced cellular efficiency.
What Is the Best NAD+ Supplement?
There are two main NAD+ precursors on the market:
- NMN (Nicotinamide Mononucleotide)
- NR (Nicotinamide Riboside)
Both can convert into NAD+ in the body. However, NMN sits one step closer in the NAD+ pathway, which is why it’s widely seen as the more direct precursor.
That’s why NMN has become the preferred choice in the healthy ageing and biohacking space.
Why Purity Matters More Than Marketing
When searching for the best NAD+ supplement, purity is everything.
If a product contains fillers, binders or anti-caking agents, you're not getting 100% active ingredient.
At My Dailys, we manufacture capsule-only NMN with:
- No fillers
- No binders
- No anti-caking agents
- Third-party testing for potency
Independent Lab Result: 101% Potency
Our most recent third-party HPLC test showed:
NMN Potency: 101%
This confirms the product contains the full labelled dose of active beta-NMN.
Real NAD+ Blood Test Results (Co-Founder Maxwell, Age 38)
Testing purity is one thing.
Testing biological impact is another.
My Dailys co-founder Maxwell (age 38) took:
1 capsule per day of My Dailys NMN
His NAD+ levels were tested using an enzymatic cycling assay by MoleQlar in Germany.
Result: 58.8 μmol/L
This is approximately 3x higher than the average range typically seen for his age group.
So What Is the Best NAD+ Supplement?
If you’re evaluating options, look for:
- Beta-NMN (not generic blends)
- Third-party HPLC testing
- Full transparency
- No unnecessary additives
- Clear serving size (ours is 1 capsule per day)
The best NAD+ supplement isn’t about hype. It’s about verified purity and real-world results.
My Dailys NMN
✔ 100% active beta-NMN
✔ Third-party potency tested
✔ Capsule only, no fillers
✔ 60 servings per pouch
✔ Made for daily consistency
If you're serious about supporting your NAD+ levels long term, this is one small daily habit that can make a meaningful difference.
