US President Donald Trump said on May 18, 2020, that he’s been taking the antimalarial drug hydroxychloroquine in case he gets Covid-19. This is despite no solid research proving that the drug provides any benefits for treating coronavirus. A recent French study involving more than 180 patients found no benefits in taking the drug for treating coronavirus. The US Food and Drug Administration has also warned against using the therapy for coronavirus outside clinical trials, citing evidence that…