The principal action of Virasol™ is to prevent the virus from docking with and entering your cells. It does this through the protease inhibiting effect of Isatis indigotica. Protease inhibitors prevent viral replication by selectively binding to viral proteases and blocking proteolytic cleavage of protein precursors that are necessary for the production of infectious viral particles., and Pterocarpus soyauxii, (contains Savinin) which suppresses TNF-a, a pro-inflammatory cytokine mainly produced by monocytes and macrophages. Polygonum multiflorum (contains Emodin), a compound that blocks the virus spike S protein and angiotensin-converting enzyme 2 (ACE2) interaction, preventing the virus from docking with the cell.