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NMN Supplement 500mg by Oxford Vitality - High-Strength NMN Capsules
Pure NMN (Nicotinamide Mononucleotide) by Oxford Vitality, with 500mg of NMN per capsule. 99%+ pure, third-party laboratory tested and made in the UK. Suitable for vegans and vegetarians....
See our latest lab certificates
Every batch is independently tested for purity, heavy metals and microbial safety. View the certificates for our current batch below.
Purity Test (HPLC)
Active NMN content & purity verified by HPLC assay.
⬇ View certificateCertificate of Analysis
Identity, purity, assay & full specification confirmed.
⬇ View certificateHeavy Metals & Microbials
Arsenic, cadmium, lead, mercury & microbial safety tested.
⬇ View certificateCellular energy
Supports NAD+, central to how cells make energy.
Healthy ageing
A simple daily habit to support ageing well.
Everyday clarity
For feeling sharp and steady through the day.
One a day
Easy to remember, easy to keep up.
What to expect when you take NMN
NMN tops up NAD⁺, a molecule your cells rely on for energy and repair that naturally falls as we age.² Everyone is different, but here's a rough guide to the first few months.
Getting started
Take one 500mg capsule a day with water, ideally in the morning with food. Most people won't feel anything dramatic yet. Behind the scenes, your body is beginning to top up its NAD⁺ levels.¹
Building your NAD⁺
With daily use, NAD⁺ levels build up steadily. This is often when people start to notice steadier energy through the day and a little more mental clarity.
Into your routine
Taken consistently, your daily capsule becomes a habit. This is when many of our customers tell us they feel the most benefit to their energy, focus and general sense of wellbeing.
The long game
NMN works best as a long-term daily habit rather than a quick fix. Keeping it up supports your NAD⁺ levels and healthy ageing over time. Our 90-capsule bottle makes the routine easy, and better value.
Food supplement. Not intended to diagnose, treat, cure or prevent any disease, and not a substitute for a varied diet and healthy lifestyle. Do not exceed the recommended daily dose. Individual experiences vary.
¹ Yi et al. (2023), GeroScience — NMN supplementation raised blood NAD⁺ levels in adults. ² Massudi et al. (2012), PLoS ONE — NAD⁺ levels decline in human tissue with age.
Don't just take our word for it
I wasn't too sure about ordering this, but so glad I did. I've been taking it three weeks and feel a big difference.
Been on these now for almost three months and definitely notice a difference in energy, and have the best night's sleep ever. Will keep taking them.
I only use these — top product. Been on them eight months now, feeling great.
I bought the kit and am currently taking one of each a day. So far my memory has improved so much that I don't get stuck trying to remember names etc. Working very well, thanks.
Ingredients & how to take
Each capsule contains: β-Nicotinamide Mononucleotide (NMN) 500mg, HPMC (hydroxypropyl methylcellulose) vegetarian capsule shell.
How to take: One capsule daily with water, ideally in the morning with food.
Suitable for vegans and vegetarians. Do not exceed the recommended daily dose.
Made in the UK by Oxford Vitality
Produced by Oxford Vitality, an established UK supplement manufacturer. Every batch is made in the UK in a GMP-certified facility — which also holds ISO 9001 (quality management) and ISO 22000 (food safety management) certification — and lab tested, internally and externally by a third-party testing house for purity and quality.
From the Empower community
Good to know
How long does one bottle last?
30 capsules is a 1-month supply; 90 capsules is a 3-month supply (best value), at one capsule a day.
Is it 3rd party tested?
Yes! Our NMN undergoes rigorous independent testing for purity, assay, heavy metals & microbials. Our latest batch results are found above on this page.
When will I notice anything?
Supplements work gradually and vary from person to person. NMN is best thought of as a long-term daily habit rather than a quick fix.
Is it suitable for me?
It's suitable for adults, and for vegans and vegetarians. If you are pregnant, breastfeeding, taking medication or managing a health condition, check with your doctor before starting.
Is this a subscription?
No, we do not currently offer subscriptions for any of our products.
What if it's not for me?
You're covered by our 100-day money-back guarantee. Return your product to us within 100 days (even if it's an empty bottle) and we'll issue a refund.