Purest NMN Supplement UK: How to Check Purity and Why It Matters
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NMN purity is not a marketing claim -- it is the most important quality indicator when choosing an NMN supplement. A product listed as "NMN 500mg" might contain anywhere from 60% to 99.9% actual NMN, with the rest being unlisted fillers, degraded compound, or in some cases, nothing at all. Here is how to check purity and why it matters.
Why NMN Purity Matters More Than Other Supplements
NMN is a relatively unstable molecule. It degrades in heat, humidity, and light faster than most common supplements. A capsule that leaves the factory at 95% purity might arrive at 70% if it has been stored incorrectly during shipping. And unlike vitamin C, where degradation is largely harmless, degraded NMN simply does not convert to NAD+ efficiently.
How to Verify NMN Purity: The Certificate of Analysis (CoA)
The only reliable way to verify NMN purity is through a published, third-party Certificate of Analysis (CoA). Here is what to look for:
- Third-party testing: The CoA must be issued by an independent laboratory, not the manufacturer themselves
- NMN content: Should show 98% or higher beta-NMN purity. Anything below 95% is substandard
- Batch number: CoAs should be batch-specific, not generic. A single CoA for all products is a red flag
- HPLC testing method: High-Performance Liquid Chromatography is the gold standard for measuring NMN purity
- Contaminant testing: Heavy metals, microbial contamination, and solvent residues should also be tested
Red Flags to Avoid
- No CoA published or available on request
- CoA from in-house laboratory (not independent)
- "Proprietary blend" listings that hide actual NMN content
- Very low price (pharmaceutical-grade NMN raw material costs significantly more than degraded or diluted product)
- Products shipped without temperature-controlled packaging
AlphaVita NMN 500mg: Purity Standards
AlphaVita NMN 500mg is independently third-party tested to 99%+ purity using HPLC methodology. Each batch has its own CoA available on request. The product is manufactured in a GMP-certified UK facility and shipped with appropriate packaging to maintain stability from warehouse to your door.