Two new studies are the latest in a series to show that a drug touted by U.S. President Donald Trump as a potential game changer against COVID-19 doesn't work. Hydroxychloroquine reduces inflammation, pain and swelling, and is widely used to treat rheumatic diseases and malaria. Laboratory tests of the drug against COVID-19 yielded promising results, but mounting evidence from clinical and observational studies suggest that it doesn't provide any meaningful benefits for COVID-19 patients. In the first of the two new studies published May 14 in the BMJ, researchers in France assessed the effectiveness and safety of hydroxychloroquine compared with...
