Bentonite — answers to bentonite clay
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A naturally occurring absorbent clay composed mainly of the mineral montmorillonite, mined and processed for various uses including food and supplement applications.
Why it’s used
Used in some supplements as a binding or anti-caking agent, and taken by others in the belief that it can bind unwanted substances in the digestive tract, sometimes marketed under 'detox' framing.
What the evidence says
As a manufacturing aid, bentonite's role is largely mechanical. For oral 'detox' or toxin-binding claims made in some products, rigorous human clinical evidence is lacking, and safety data on regular oral clay consumption in supplement form is limited.
Where we looked
There was no paper to cite here, so this is the search instead — run it yourself and see what we saw.
- PubMed: 0 records · searched August 2026
"Bentonite"[Title/Abstract] AND ("dietary supplements"[MeSH] OR supplementation[Title/Abstract] OR supplement[Title/Abstract] OR supplements[Title/Abstract] OR "oral administration"[Title/Abstract]) AND (randomized controlled trial[pt] OR clinical trial[pt] OR meta-analysis[pt] OR systematic review[pt]) AND humans[MeSH] - PubMed: 3612 records · searched August 2026
"Bentonite"[Title/Abstract]
This says what this database holds under these terms. It is not a finding that no research exists.
Context
Available data are mostly from industrial and veterinary use of clays rather than controlled human trials of oral bentonite supplementation.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.