FILE – In this April 6, 2020 file photo, a pharmacist holds a bottle of the drug hydroxychloroquine in Oakland, Calif. Results published Wednesday, June 3, 2020, by the New England Journal of Medicine show that hydroxychloroquine was no better than placebo pills at preventing illness from the COVID-19 coronavirus. The drug did not seem to cause serious harm, though – about 40% on it had side effects, mostly mild stomach problems. (AP Photo/Ben Margot)