Mouthwashes and Antiseptics Could Inactivate SARS-CoV-2

Researchers at Penn State College of Medicine concluded that certain oral mouthwashes and antiseptics could inactivate human coronaviruses. The researchers tested various oral and nasopharyngeal rinses in a laboratory setting. They evaluated various products like peroxide sore-mouth cleansers, baby shampoo, and certain mouthwashes.

Tests were used to replicate the interaction of nasal and oral cavities with mouthwashes and rinses. They allowed various solutions of mouthwashes and rinses to interact with the virus for 30 seconds, 1 minute, and 2 minutes. Virus, which was genetically similar to SARS-CoV-2 was used. The 1% baby shampoo solution inactivated greater than 99.9% of human coronavirus after a 2-minute contact time. The 1% of baby shampoo is often used by head and neck doctors to rinse the sinuses. Many gargle and mouthwash products were also effective at inactivating the virus. Listerine antiseptic mouthwash inactivated 99.9% of the human coronavirus at only 30 seconds of exposure.

Other related mouthwashes like Listerine ultra, etc. were not as effective. Peroxide sore mouth cleaners at 1.5% and 3% showed a 90% and 99% decrease in the virus. Betadine also inactivated 99.9% of the virus. Such nasal rinses and mouthwashes could be an effective strategy to lessen the transmission of SARS-CoV-2 and could provide an additional level of protection.

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