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Can Mouthwash Prevent Spread of COVID-19?

March 16, 2022

Researchers suspect that the use of mouthwash can help reduce transmission of coronavirus. People with COVID-19 often have virus particles present in oral tissue and saliva — and may unknowingly infect others through kissing or even by simply sharing utensils. 

There is some evidence that mouthwash can reduce the virus content in the mouth and saliva which has led some researchers to believe that mouthwash:

  • Can reduce the viral content of virus in saliva by as much as 97%
  • Helps control gum inflammation and oral plaque which in turn reduces the risk of viral transmission
  • May reduce the effects of an existing coronavirus infection

As part of the COVID-19 protocol, a dentist will often insist on patients using a mouthwash before any dental appointment even if it is only a check-up or simple teeth cleaning procedure. This use of mouthwash at the dentist could potentially reduce the transmission of the virus but this is still matter of debate among researchers. 

While mouthwash reduces viral load and may limit the effects of coronavirus it does not prevent or cure the disease. Choosing the best mouthwash to fight coronavirus should be discussed with your dentist and you can find out more at

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