New research shows many dental mouthwashes destroy the lipid layer of coronaviruses and reduce the replication of the virus in the throat and salivary glands, making mouthwash an important preventive in early COVID-19 illnesses.
Mouthwashes that include ethanol, chlorhexidine, cetylpyridinium chloride, hydrogen peroxide or povidone-iodine are especially effective and may even work against any new coronavirus strains that emerge.
Source: Newswise May 12, 2020