Longevity Formulas vs British Supplements NMN: Which Offers Better Value?
Two UK NMN suppliers taking very different approaches: Longevity Formulas focuses on pharmaceutical-grade purity with delayed-release technology, whilst British Supplements emphasises high-dose NMN with an "uptake blend" of spices.
Both are UK-manufactured, but the differences in formulation, delivery method, testing transparency, and pricing are substantial.
The key question: is a higher dose in a standard capsule better than a clinically-relevant dose in a delayed-release capsule? And which offers better value for money?
Quick Verdict
Longevity Formulas offers significantly better value and more reliable absorption. At £39.99 for pharmaceutical-grade NMN in delayed-release capsules versus £91.12 for British Supplements' high-dose formula, you're paying £51.13 less for proven absorption technology and published test results.
The 500mg dose matches clinical research, whilst the delayed-release system ensures it reaches your intestines intact without relying on unproven "uptake blends."
Longevity Formulas Pure NMN
| Feature | Details |
|---|---|
| Price | £39.99 |
| Capsules per bottle | 60 |
| NMN dose per capsule | 500mg |
| Additional ingredients | None (pure NMN only) |
| Cost per day | £0.67 |
| Supply duration | 2 months |
| Capsule type | Delayed-release (HPMC) |
| Testing | Yes (CoA published) |
| Manufacturing | UK, GMP certified |
| Vegan-friendly | Yes |
Pros:
- Delayed-release capsules protect NMN from stomach acid
- Lower price (£39.99 vs £53.48)
- 500mg dose matches clinical research
- Pure formulation with no additional ingredients
- Published Certificates of Analysis
- Better value per milligram when accounting for absorption
- Clean, transparent approach
Cons:
- Lower absolute dose than British Supplements (but better absorption compensates)
- Newer brand with less customer reviews
Overall Score: 9/10
View Longevity Formulas Pure NMN
British Supplements Clean NMN 724mg
| Feature | Details |
|---|---|
| Price | £91.12 |
| Capsules per bottle | 60 |
| NMN dose per capsule | 724mg |
| Additional ingredients | 80mg "uptake blend" (black pepper, ginger, cumin) |
| Cost per day | £1.52 |
| Supply duration | 2 months |
| Capsule type | Standard (dissolves in stomach) |
| Testing | Not publicly disclosed |
| Manufacturing | UK, GMP certified |
| Vegan-friendly | Yes |
Pros:
- Higher absolute NMN dose per capsule (724mg)
- Established UK brand with strong following
- "No fillers" philosophy
- Large number of customer reviews
- Includes uptake blend (though efficacy for NMN is unclear)
- Same 2-month supply as Longevity Formulas
Cons:
- Significantly more expensive (£91.12 vs £39.99)
- £51.13 more expensive for same 2-month supply
- Standard capsules expose NMN to stomach acid
- £1.52 per day vs £0.67 per day (127% more expensive)
- No published Certificates of Analysis or batch testing results
- Uptake blend unproven for NMN absorption
- 724mg dose exceeds amounts used in clinical research (unclear if beneficial)
Overall Score: 6/10
The Crucial Difference: Dose vs Absorption
This comparison highlights a critical question in supplement science: does a higher dose matter if absorption is compromised?
British Supplements' Approach: High Dose + Uptake Blend
British Supplements provides 724mg of NMN per capsule plus an 80mg "uptake blend" containing black pepper extract, ginger extract, and cumin extract. The philosophy is straightforward: more NMN means more potential benefit.
The uptake blend ingredients (particularly black pepper/piperine) have shown benefits for absorption of certain nutrients like curcumin. However, these spices improve absorption by different mechanisms that may not apply to NMN. There's no published research showing that black pepper, ginger, or cumin improve NMN bioavailability specifically.
More importantly, the standard capsules dissolve in the stomach, exposing all 724mg to stomach acid before reaching the intestines where absorption occurs.
Longevity Formulas' Approach: Clinical Dose + Proven Technology
Longevity Formulas provides 500mg of pure NMN in delayed-release capsules. This dose aligns with the amounts used in clinical research showing benefits for NAD+ levels and cellular function.
The delayed-release technology is straightforward and proven: acid-resistant capsules bypass the stomach intact and dissolve in the intestines where NMN absorption occurs. This protects the entire 500mg dose from stomach acid degradation.
The result? More of the NMN you're paying for actually reaches your intestines intact and available for absorption.
Learn more about our advanced delivery system
What Does Clinical Research Use?
Most human studies on NMN use doses between 250mg and 500mg daily. These are the amounts that have been tested in controlled clinical trials and shown to increase NAD+ levels and support cellular function.
The 724mg dose from British Supplements exceeds the amounts used in published research. Whilst this isn't necessarily problematic, it raises questions: Is more better? Research hasn't established that higher doses provide proportionally greater benefits when it comes to longevity. In fact, there may be a ceiling effect where the body can only process and utilise a certain amount of NMN at once.
Without clinical data supporting mega-doses, and with the absorption challenges of standard capsules, it's unclear whether 724mg in a standard capsule delivers more benefit than 500mg in a delayed-release capsule that protects the entire dose from stomach acid.
The Real Cost
The price difference is substantial when comparing like-for-like 60-capsule bottles:
| Metric | Longevity Formulas | British Supplements | Difference |
|---|---|---|---|
| Price per bottle (60 caps) | £39.99 | £91.12 | £51.13 less |
| Price per capsule | £0.67 | £1.52 | £0.85 less |
| Cost per day | £0.67 | £1.52 | £0.85 less |
| Annual cost (1/day) | £243.94 | £552.08 | £308.14 saving |
Over a year, choosing Longevity Formulas saves you £308.14. That's the cost of adding several other quality longevity supplements to your routine - NAC, CoQ10, Resveratrol, or Magnesium.
British Supplements is 127% more expensive per day for standard capsules with no published test results that we could find, compared to delayed-release capsules with full transparency.
Cost Per Milligram
Even looking at raw NMN content:
- Longevity Formulas: £0.00133 per mg of NMN
- British Supplements: £0.00210 per mg of NMN
You're paying 58% more per milligram with British Supplements, and that's before accounting for the superior absorption of delayed-release delivery and the lack of published purity testing.
Quality and Testing
Longevity Formulas publishes Certificates of Analysis for each batch, showing exact purity levels and confirming absence of contaminants. The transparency is complete - you can verify exactly what you're getting, batch by batch.
View our Certificates of Analysis
British Supplements manufactures in the UK under GMP standards and emphasises their "clean" approach with no fillers or binders. However, they don't publish Certificates of Analysis or batch-specific test results publicly that we could find.
Whilst they may test internally, the lack of published results means you're taking their word for purity and potency rather than being able to verify it independently.
In the supplement industry, published testing results matter. They provide accountability and allow customers to make informed decisions based on actual data.
Who Should Choose Each Brand?
Choose Longevity Formulas if:
- You want proven absorption technology (delayed-release capsules)
- Value for money matters to you
- You prefer doses that align with clinical research
- You want a 2-month supply in each bottle
- You value published test results
- You prefer pure formulations without additional ingredients
Choose British Supplements if:
- You specifically want the highest possible dose regardless of cost
- You're willing to pay £91.12 per 2-month supply (£552.08 annually)
- You want the "uptake blend" approach
- You're already a loyal customer of the brand
- Price isn't a consideration
Additional Options Worth Considering
If you're interested in a more comprehensive NAD+ formula:
NMN Complex - Combines 250mg NMN with TMG and Trans-Resveratrol in delayed-release capsules. This addresses methylation balance whilst supporting NAD+ levels, offering a complete formula rather than just high-dose NMN.
NAD+ Boosting Supplements Collection - View the full range including Alpha Lipoic Acid and CoQ10, which support NAD+ through complementary pathways.
Frequently Asked Questions
Is a higher dose of NMN better?
This is the key question. Clinical research uses doses between 250-500mg and shows clear benefits at these levels.
There's also a possibility of diminishing returns - your body can only absorb and utilise so much NMN at once. If there's a ceiling effect, taking more doesn't necessarily mean getting more benefit.
Additionally, if the higher dose is in a standard capsule that exposes NMN to stomach acid, you may be paying for extra milligrams that get degraded before absorption anyway. A protected 500mg dose might deliver more usable NMN than an unprotected 724mg dose.
Does the uptake blend actually help NMN absorption?
Black pepper extract (piperine) improves absorption of some nutrients, particularly curcumin, by inhibiting certain enzymes. However, there's no published research showing these spices improve NMN bioavailability specifically. NMN absorption occurs in the small intestine through specific transporters, and the mechanism by which black pepper helps curcumin doesn't necessarily apply to NMN.
Delayed-release delivery, on the other hand, is a proven technology for protecting compounds from stomach acid degradation.
Why is British Supplements so much more expensive?
British Supplements charges £91.12 for 60 capsules (2-month supply), whilst Longevity Formulas provides the same 60 capsules for £39.99. That's a £51.13 difference for the same supply duration, making British Supplements 127% more expensive.
The higher dose (724mg vs 500mg) doesn't fully explain this price difference. You're paying significantly more per milligram (58% more), and you're not getting published test results or delayed-release technology to ensure better absorption.
Are both products pharmaceutical-grade?
Longevity Formulas publishes Certificates of Analysis showing pharmaceutical-grade purity and exact test results for each batch. You can independently verify the quality.
British Supplements manufactures under GMP standards in the UK and emphasises their "clean" formulation, but doesn't publish batch-specific test results. Whilst they may test internally, the lack of published CoAs means you cannot independently verify purity claims.
Can I take other supplements with NMN?
Yes. NMN works well with other longevity supplements like TMG (helps with methylation), Resveratrol, Alpha Lipoic Acid, and CoQ10. Many people build comprehensive NAD+ support stacks.
The Bottom Line
Both Longevity Formulas and British Supplements offer quality UK-manufactured NMN, but the value proposition is vastly different.
British Supplements provides:
- Very high dose per capsule (724mg)
- "Uptake blend" of unproven benefit for NMN
- Standard capsules that expose NMN to stomach acid
- Premium pricing at £91.12 for 60 capsules
- Annual cost of £552.08
Longevity Formulas provides:
- Clinically-relevant dose (500mg)
- Proven delayed-release technology
- Protection from stomach acid degradation
- Published Certificates of Analysis for complete transparency
- Better value at £39.99 for 60 capsules
- Annual cost of £243.94 (saves you £308.14 per year)
Unless you specifically believe that a higher dose in standard capsules is superior to a proven clinical dose in delayed-release capsules (despite no evidence supporting this), Longevity Formulas offers dramatically better value.
You're getting clinically-backed dosing, proven absorption technology, published test results for transparency, and saving over £300 per year. For most people seeking NAD+ support, that's an easy choice.
Ready to experience pharmaceutical-grade NMN with superior absorption?