PUBLIC HEALTH INFORMATIONCOVID-19 Hydroxychloroquine Studies Flawed, Experts SaySaveMark Us Preferred on GooglePrintA pharmacy tech pours out pills of hydroxychloroquine at Rock Canyon Pharmacy in Provo, Utah, on May 20, 2020. George Frey/AFP via Getty ImagesPetr SvabReporter8/4/2020|Updated: 8/5/2020News AnalysisThere are many studies on the effectiveness of hydroxychloroquine (HCQ) in treating COVID-19, but only a handful of them adhere to the highest scientific standards. Even those, however, fail to answer some of the most pressing questions.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.