Diagrams showing (left) how catalase acts on symptoms of COVID-19, and a diagram showing what the enzyme does, converting hydrogen peroxide into water and oxygen.

Catalase, a naturally occurring enzyme, holds potential as a low-cost therapeutic drug to treat COVID-19 symptoms and suppress the replication of coronavirus inside the body.

Protocol Published: 17 December 2009 Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Christine J Weydert & Joseph J Cullen Nature Protocols 5 ...

1. Comparable quantitative determinations of potato catalase can be made in the fresh extracts, if the material is ground with calcium carbonate, the extract diluted immediately with ten parts of ...