NMN Capsule Comparison UK — What We Found When We Physically Tested Two Leading 500mg Products Side by Side
Charge Products physically tested two UK NMN 500mg capsule products — our own Charge Products NMN and Element 5 NMN — across five physical checks: capsule size, total capsule weight, under-tongue dissolve speed, powder appearance and taste profile. Both products claim 500mg NMN per capsule. Both state third-party testing. The physical differences we observed were clearly noticeable across all five tests. All observations are our own. Food supplement — not a medicine. NMN has no authorised UK health claims.
If you are looking to buy NMN capsules UK it is worth understanding that two products can make identical claims — "500mg NMN per capsule," "third-party tested," "pure NMN" — while being physically very different products. These five physical tests are ones any buyer can run at home, on any NMN capsule, before committing to a supplier.
Why Physical Tests Matter for NMN Buyers
NMN (Nicotinamide Mononucleotide) is one of the most expensive raw materials in the supplement industry. A kilogram of genuine high-purity NMN costs significantly more than a kilogram of Vitamin B3 Nicotinamide — a closely related compound that is commonly found in low-quality NMN products. The physical characteristics of a capsule — its size, weight, how the powder behaves under the tongue and what it tastes like — tell you a great deal about what you are actually holding.
None of these are definitive chemical tests. But they are practical, immediate, and free. We ran all five on both products and documented what we found.
A Size 0 HPMC capsule holds approximately 530mg of powder. A Size 00 capsule holds approximately 700mg. If a product claims 500mg of pure NMN in a Size 0 shell, there is very little physical room for anything else. In a Size 00 shell claiming 500mg NMN, there is approximately 200mg of unexplained space — which must be filled with something.
Element 5 states on their listing: "Using Slow Release Technology for Optimal Performance." This is their stated claim about their product — we are not disputing it. We are noting what it means for buyers.
Slow-release systems typically require additional excipients — binders, polymers or coating agents — to control dissolution rate. Our capsule contains NMN and HPMC capsule shell only. No slow-release technology. No additional excipients.
The question a buyer might reasonably ask is: what ingredients are used to achieve the slow-release effect, and are they fully declared on the label? Any excipients used in a slow-release mechanism are ingredients and must legally be declared.
We opened both capsules and placed a small amount of powder directly under the tongue. We observed dissolve speed, texture and aftertaste. Pure NMN is highly water-soluble and dissolves rapidly by nature.
Pure high-purity NMN has a distinctive, immediately recognisable taste. This is the single most useful at-home test for any NMN buyer — and it cannot be faked by a certificate or a label.
Pure NMN at high purity is a very fine, bright white, free-flowing powder. Our Eurofins Certificate of Analysis confirms appearance as "White Powder — Conforms" for batch PC-SE260410.
Summary — All Five Physical Observations Side by Side
| Test | ✅ Charge Products | ⚠️ Element 5 (Observed) |
|---|---|---|
| Capsule Size | Size 0 · White Opaque ✅ | Size 00 · Clear Shell |
| Capsule Weight | ~530mg total ✅ | ~750–800mg observed |
| Dissolve Speed | Rapid · 3–5 seconds ✅ | Slower · consistent with SR tech |
| Under Tongue | No clumping ✅ | Clumping observed |
| Taste Profile | Sharp zesty citrus ✅ | Slight bitterness noted |
| Powder Colour | Bright white ✅ | Off-white observed |
| Added Technology | None · NMN + HPMC only ✅ | Slow Release stated by seller |
| 3rd Party Testing | Eurofins UK · 99.99% ✅ | Third-party tested stated |
| Encapsulation | In-House UK · batch traceable ✅ | Not stated as in-house |
| Raw NMN Powder | Available — same batch ✅ | Not available |
All observations our own · Products purchased open market May 2026 · Food supplements are not medicines · NMN has no authorised UK health claims
One More Important Difference — In-House Encapsulation
There is a sixth differentiator between these two products that goes beyond physical appearance — and it matters significantly for buyers who care about chain of custody and ingredient integrity.
Charge Products encapsulates all NMN capsules in-house, in our own 5 Star Food Hygiene rated facility in Southend-on-Sea, Essex. We use the exact same Eurofins-verified raw NMN powder that we sell separately as NMN powder UK. There are no middlemen, no third-party capsule fillers, no break in the chain between the tested raw material and the capsule you receive. Every batch is traceable from the Eurofins CoA on the raw powder through to the finished capsule.
We are not aware of Element 5 stating that their capsules are encapsulated in-house. This is relevant because when a product is sent to a third-party filler, the chain of custody between the tested raw material and the finished capsule is extended — and the buyer has less visibility over exactly what went into each capsule.
NMN Available As Capsules and Powder — Charge Products Only
One of the most significant practical differences between these two products is that Charge Products supplies NMN in both capsule and powder format — and both come from the same Eurofins-verified batch. Element 5 only supplies NMN capsules.
Charge Products NMN powder uses the same Eurofins-verified raw material as our capsules — batch PC-SE260410, 99.99% purity via HPLC. Buying the powder separately lets you verify taste, appearance and dissolve speed independently before committing to a larger capsule order. No other UK NMN capsule brand in this comparison offers this.
What to Check Before Buying Any NMN Capsule UK
Charge Products NMN 500mg — Pure. Tested. Transparent.
99.99% purity · Eurofins tested · Size 0 · zero fillers · vegan HPMC · in-house filled · UK made · same-day dispatch · buy 2 get 1 free
Not intended to diagnose, treat, cure or prevent any disease or medical condition.
Frequently Asked Questions
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⚖️ Legal notice: This post documents the independent physical observations of Charge Products when comparing two products purchased on the open market in May 2026. All observations reflect what we personally found during physical testing only. We make no claims about the chemical composition, manufacturing practices, ingredient accuracy or safety of any third-party product. We cannot verify what any third-party product contains chemically. Element 5 is an independent brand with no commercial relationship to Charge Products. The observations described are physical and sensory only. Buyers should conduct their own research and contact sellers directly with any product queries. Food supplements are not medicines. NMN has no authorised EU/UK health claims on the GB NHC Register. Not intended to diagnose, treat, cure or prevent any disease or medical condition. Last updated May 2026.
