In the field of natural health products, quality is not a luxury but a necessity. Find out what to look for in certifications and how Martinus van Lies selects products.
Why product quality is decisive
The market for dietary supplements and natural health products is booming — and unfortunately so is the number of substandard offerings. Without strict quality controls, products can contain contaminants, be incorrectly dosed or simply not deliver what the label promises.
It is therefore essential for consumers to pay attention to verifiable quality characteristics. Certifications and lab reports provide important guidance here.
Key certifications at a glance
Not every certification carries the same weight. Here are some of the most important quality indicators to look out for:
GMP certification
Good Manufacturing Practice (GMP) ensures that products are manufactured under controlled conditions. This certification is a fundamental standard for quality assurance in production.
ISO certifications
ISO standards such as ISO 9001 (quality management) or ISO 22000 (food safety) demonstrate that a company systematically works on the quality of its processes.
Third-party laboratory testing
Independent tests by accredited third parties are particularly meaningful, as they are not conducted by the manufacturer itself. They confirm purity, active ingredient content and the absence of harmful substances.
How Martinus selects products
Martinus van Lies applies strict criteria when selecting products:
- Transparent production — Only products from manufacturers who disclose their production processes
- Available lab reports — Every recommended product is supported by current laboratory results
- Recognised certifications — GMP, ISO and other relevant standards must be in place
- Traceable ingredients — The origin of raw materials must be documented and traceable
This careful selection process ensures that only products meeting the highest quality standards are recommended.
Trust through transparency
Trust is built not through advertising promises but through verifiable facts. That is precisely why Martinus van Lies shares the relevant documentation at every home visit: lab reports, certificates and statistical information — openly and honestly.
“Quality is not something you claim — you have to prove it. That is why transparency and certifications are non-negotiable for me.” — Martinus van Lies
Do you have questions about product quality or certifications? Martinus van Lies is happy to speak with you personally — at your home, anywhere in Germany.
Note: We do not provide medical advice but share statistical information.
