Winnow: a probiotic that clears microplastics?
Shown in mice, with two hand-picked strains. Not in people.
Winnow sells a “microplastic binding probiotic”, two capsules a day. Short answer: the study it cites screened 784 strains and found two that helped mice pass plastic particles. Winnow says it uses three well-studied strains; it does not say they are those two, and nobody has tested any of this in people — or shown that clearing gut microplastics improves health.
How the evidence flows
Each claim (middle), the studies that tested it (left) — green found it, red found nothing — and the grade they add up to (right). Drawn from the same records as the grades below. Tap to open full size.
Winnow (microplastic-binding probiotic) · evidence checked 2026-10-26
What the research shows
Grades are calculated from the studies listed, by fixed rules.
- Some probiotic strains bind microplastics and help the body pass themLab studies only
In mice, two strains picked from 784 raised the excretion of plastic particles by about a third. Nobody has measured this in people, and Winnow does not say its strains are those two.
- Winnow removes microplastics from your body and protects your healthNo real evidence
We found no study of Winnow, and no study showing that removing microplastics from the gut improves anyone’s health. Its site’s figures on microplastics in blood and arteries describe where plastics have been found, not what the capsule does.
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