At present, there are more than 2,200 clinical trials attempting to find a Covid-19 vaccine or therapy. The National Institute of Health recently stopped its hydroxychloroquine clinical trial, concluding that there was no real benefit for affected individuals. Dexamethasone, however, recently highlighted positive preliminary results from the RECOVERY (Randomised Evaluation of COVid-19 thERapY) clinical trial.
The UK RECOVERY trial is a Phase II/III randomised, controlled trial, which commenced in March 2020 and is testing numerous potential treatments for Covid-19. Read more here.