Gargle away the sniffles? study tests mouthwash against cold and flu
NCT ID NCT06479226
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether gargling with a mouthwash containing cetylpyridinium chloride and zinc could reduce cold and flu symptoms. 150 healthy adults either brushed their teeth alone or brushed and then gargled with the mouthwash twice daily for 90 days. Participants tracked their symptoms daily. The goal was to see if the mouthwash group had more symptom-free days.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- cetylpyridinium chloride (0.075%) and zinc mouthwash
- What this could lead to
- If it works, this could offer a simple, low-cost way to reduce cold and flu symptoms during the season.
- What could go wrong
- This is a small, completed study in healthy adults, so results may not apply to everyone. The effect may be modest and not prevent illness entirely.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Federal University of Pelotas
Pelotas, Rio Grande do Sul, Brazil
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