(CNN)The Food and Drug Administration has revoked its emergency use authorization for the drugs hydroxychloroquine and chloroquine for the treatment of Covid-19.
Hydroxychloroquine was frequently touted by President Donald Trump, and he has claimed to have used it himself.
After reviewing the current research available on the drugs, the FDA determined that the drugs do not meet “the statutory criteria” for emergency use authorization as they are unlikely to be effective in treating Covid-19 based on the latest scientific evidence, the agency noted on its website on Monday.
“FDA has concluded that, based on this new information and other information discussed in the attached memorandum, it is no longer reasonable to believe that oral formulations of HCQ and CQ may be effective in treating COVID-19, nor is it reasonable to believe that the known and potential benefits of these products outweigh their known and potential risks,” FDA chief scientist Denise Hinton wrote in a letter to Gary Disbrow of the Biomedical Advanced Research and Development Authority (BARDA) on Monday.
“Accordingly, FDA revokes the EUA for emergency use of HCQ and CQ to treat COVID-19,” Hinton wrote in the letter, using abbreviations for hydroxychloroquine and chloroquine. “As of the date of this letter, the oral formulations of HCQ and CQ are no longer authorized by FDA to treat COVID-19.”