Cheap corticosteroids work in the treatment of serious COIVD-19 disease. No effect on the virus, but it suppresses an over-reactive immune system.
Association Between Administration of Systemic Corticosteroids and Mortality Among Critically Ill Patients With COVID-19: A Meta-analysis
Corticosteroids were associated with lower mortality among critically ill patients who were and were not receiving invasive mechanical ventilation at randomization, as well as in patients from the RECOVERY trial who required oxygen with or without noninvasive ventilation but were not receiving invasive mechanical ventilation at randomization. These results were consistent with the subgroup analysis suggesting that the association between corticosteroids and lower mortality was stronger in patients who were not receiving vasoactive medication at randomization than in those who were receiving vasoactive medication at randomization. The ORs for the association between corticosteroids and mortality appeared similar for older and younger individuals, men and women, and for longer and shorter durations of symptoms before randomization.
https://pubmed.ncbi.nlm.nih.gov/32876694....