Quality control
Testing standards
Every MindSilence lot is tested twice: once by the manufacturing facility as part of its own release process, and again by an independent laboratory that has no commercial interest in the result. This page describes what that involves. The result for the lot currently shipping sits on the verification page.
Where MindSilence is made
Manufacturing takes place in the United States in a facility registered with the FDA and operating under current Good Manufacturing Practices. In practice cGMP means documented procedures for everything: how raw materials are received and quarantined, how equipment is cleaned between runs, how each batch is recorded, and how deviations are investigated and closed out. It is a paperwork regime as much as a production one, which is the point. A facility that cannot produce records for a lot cannot demonstrate what happened during it.
Registration with the FDA is not approval, and it is worth being clear about the difference. Registration means the facility is on the agency's list and subject to inspection. Approval is something the FDA does for drugs, not for dietary supplements[1].
What gets tested on every lot
| Test | Method | What it confirms |
|---|---|---|
| Identity | HPLC-PDA | The material in the capsule is the material named on the label |
| Potency | HPLC-PDA | Actives fall within the specification set for the run |
| Heavy metals | ICP-MS | Lead, arsenic, cadmium and mercury sit under the limits set for the product |
| Microbiology | USP methods | Total counts and specified organisms fall within compendial limits |
| Pesticide screening | GC-MS/MS | Botanical inputs are clear of the screened residues |
| Moisture and appearance | Physical | Capsules are intact, uniform and correctly filled |
Tamarack Laboratory Sciences, LLC is accredited to ISO/IEC 17025, the standard covering testing laboratory competence. A lot that fails any of the above is held rather than released, and a held lot is either reworked where that is possible or destroyed.
Sourcing and allergens
Botanical inputs are bought as standardised extracts from suppliers who provide their own certificates, which are checked against our incoming testing rather than accepted at face value. Suppliers who cannot produce documentation do not get used, however good the price is.
MindSilence is non-GMO. No gluten, dairy or soy is added during manufacture. It is produced in a facility that handles other supplement products, so anyone with a severe allergy should contact support before ordering and we will share what the facility can confirm about cross-contact controls for the current run.
What testing does not tell you
Per-lot testing confirms that what is in the capsule matches what the specification says, that it is clean, and that it is consistent from run to run. It does not establish that the formula produces any particular result, and no laboratory certificate anywhere makes that claim. Anyone presenting a certificate of analysis as proof that a supplement works has misunderstood what the document is for.
It also cannot fill the gap left by the label. Because per-ingredient amounts are not published, testing confirms the actives are present and within specification without telling you how that specification compares to intakes used in research. That limitation is real and we would rather name it here than leave it implied.
This article is educational. It is not medical advice, and a supplement is not a substitute for an evaluation by your physician or audiologist.
Published Sources
- US Food and Drug Administration. Dietary Supplements. www.fda.gov/food/dietary-supplements. Accessed July 2026.
- Office of Dietary Supplements. Dietary Supplements: What You Need to Know. NIH. ods.od.nih.gov/factsheets/WYNTK-Consumer. Accessed July 2026.
Hold Onto This
- Made in the USA in an FDA-registered, cGMP facility. Registration is not approval.
- Six tests per lot by Tamarack Laboratory Sciences, LLC, accredited to ISO/IEC 17025.
- Failing lots are held, never released.
- Testing proves identity and cleanliness. It does not prove efficacy, and nobody's certificate does.