Coronavirus breakthrough: dexamethasone is first drug shown to save lives
In a large trial the drug was found to reduce the mortality in severe cases of covid-19 on ventilators or those needing oxygen therapy by 20-30%.
Dexamethasone is a steroid which is widely used and cheap and with few side effects. There is a good experience of using this drug in ITU and in some cancers. It supresses the hyperreactive immune response that is seen in patients with severe disease. The drug has no effect in milder cases.