https://techcrunch.com/2020/06/15/fda-revokes-emergency-authorization-for-chloroquine-and-hydroxychloroquine-in-covid-19-treatment/

The U.S. Food and Drug Administration (FDA) has revoked an emergency use authorization (EUA) that it previously issued for chloroquine and hydroxychloroquine, two anti-malarial drugs also used in the treatment of chronic rheumatoid arthritis (via Washington Post). These are the drugs that Trump famously touted as effective in COVID-19 treatment, despite major concerns raised with the scientific validity of early medical investigations that showed they were potentially effective agains the infection beyond the ongoing global pandemic.

Subsequent studies showed conflicting results, including when one team of researchers ended elements of its clinical study into the drugs’ use early due to excess fatalities. The FDA had issued its EUA for use of chloroquine and hydroxychloroquine in late March, prompting criticism from many in the medical and pharmaceutical research community since evidence seemed very mixed in terms of its potential efficacy and risks. Then following those deaths in that subsequent clinical study, it issued a statement of precaution regarding the use of the drugs.