dexamethasone helpful in treating the critical patients dependent on ventilators or oxygen. Trial results announced on Tuesday by researchers in Britain showed dexamethasone, used since the 1960s to reduce inflammation in diseases such as arthritis, cut death rates by around a third among the most severely ill Covid-19 patients admitted to hospital."Dexamethasone, a common steroid, has been shown to have beneficial effect on patients severely ill with Covid-19.