Testing and lab proof

What is actually verified

Three things, in the order they happen. Each one is done by someone who does not work for us.

1. The facility is FDA-registered. Every manufacturing facility our supplier uses is registered with the FDA. Registration means the facility is on file and follows the required manufacturing regulations. It is not an FDA approval of any product, because supplements are not FDA-approved as a category, and we will not pretend otherwise.
2. The facility follows cGMP. Every manufacturer our supplier uses is either GMP certified or compliant with current Good Manufacturing Practice. That is the rulebook covering how a batch is made, kept clean, recorded and checked.
3. Each batch gets a Certificate of Analysis. The COA is the lab report for one lot. It lists what was tested, the method used, the result, and the specification it had to meet. Identity, potency, and the contaminants that matter for a capsule: heavy metals, microbes, and residual solvents where relevant.

How to get the report for your bottle

Email hello@knurle.com with the lot number printed on the bottom of your bottle, and we will send you the Certificate of Analysis for that lot as a PDF. If you tell us which product it is, that helps too, though the lot number is the part that matters.

We would rather you asked than took our word for it. If a result on your COA does not match what we have published here, tell us and we will look into it properly.

What we will not claim

• Not FDA approved. No supplement is. We say FDA-registered facility and cGMP, which are the true statements.
• Not NSF certified. NSF is an independent audit of a facility. Our supplier does not claim it for the facilities that make our products, so neither do we.
• Not organic. USDA Organic is a certification the brand itself has to hold, and we do not hold it, so the word does not appear on our labels.

Where each product is made

All three are blended and encapsulated in the United States, then packed and posted from Colorado. That is the whole supply chain, and it is short on purpose.

The full label, per serving

Every amount below is what is in one full daily serving, printed the same way on the bottle. Nothing hides behind the word blend: where a manufacturer supplies two botanicals as a combined total, the line carries that total rather than a split we cannot verify.

What this page cannot do

It cannot prove a negative. No page can. What it can do is tell you exactly what checks exist, who does them, and how to read the report for the bottle in your hand. That is the honest version of lab proof, and it is the version we can stand behind.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.