Mouthwash showdown: listerine vs. lumineux – which changes your microbiome?
NCT ID NCT05603650
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how two over-the-counter mouthwashes (Listerine and Lumineux Oral Essentials) affect bacteria and three common viruses in the mouth and gut. Two hundred healthy adults aged 18-25 will rinse twice daily with one of the mouthwashes or water for about six months. Researchers will collect mouth swabs and stool samples to track changes in the microbiome.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
mouthrinse (Listerine or Lumineux Oral Essentials)
What this could lead to
If successful, this could reveal how common mouthwashes influence oral and gut health, potentially guiding better hygiene choices.
What could go wrong
This is an early-stage observational study with no direct treatment goal. Results may not lead to any health recommendations or clinical changes.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Beckman Laser Institute and Medical Clinic
RECRUITINGIrvine, California, 92612, United States
Contact Phone: •••-•••-•••• Email: •••••@•••••
Contact