FDA cautions against use of hydroxychloroquine or chloroquine for COVID-19 outside of the hospital setting or a clinical trial due to risk of heart rhythm problems
FDA is reminding health care professionals and patients of known risks, reiterates they have not been shown to be safe and effective for treating/preventing COVID-19, and they’d authorised their temporary emergency use when trials were not available, or participation not feasible
Source:
US Food and Drug Administration