Two mouthwashes disrupt COVID-19 virus under laboratory conditions
Reviewed by Emily Henderson, B.Sc.Mar 17 2021
Researchers at Rutgers School of Dental Medicine have found evidence that two types of mouthwash disrupt the COVID-19 virus under laboratory conditions, preventing it from replicating in a human cell.
The study, published in the journal Pathogens, found that Listerine and the prescription mouthwash Chlorhexidine disrupted the virus within seconds after being diluted to concentrations that would mimic actual use. Further studies are needed to test real-life efficacy in humans.
The study was conducted in a lab using concentrations of the mouthwash and the time it would take to contact tissues to replicate conditions found in the mouth, said Daniel H. Fine, the paper's senior author and chair of the school's Department of Oral Biology.
The study found two other mouthwashes showed promise in potentially providing some protection in preventing viral transmission: Betadine, which contains povidone iodine, and Peroxal, which contains hydrogen peroxide. However, only Listerine and Chlorhexidine disrupted the virus with little impact on skin cells inside the mouth that provide a protective barrier against the virus.
Both Povidone iodine and Peroxal caused significant skin cell death in our studies, while both Listerine and Chlorhexidine had minimal skin cell killing at concentrations that simulated what would be found in daily use."
Daniel H. Fine, Paper's Senior Author...
Daniel H. Fine, Paper's Senior Author...
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