Dexamethasone: First synthesized in 1957 and listed on the World Health Organization's Essential Drug Standard List, it is one of the essential drugs in the basic public health system.
On June 16, 2020, WHO said that the preliminary clinical trial results in the UK showed that dexamethasone could save the lives of patients with severe COVID-19, reduce the death rate of patients using respirators by about one third, and reduce the death rate of patients only taking oxygen by about one fifth.