Pfizer seeks FDA approval of COVID-19 pill

US pharmaceutical company Pfizer has asked the US Food and Drug Administration to authorize the emergency use of its antiviral COVID-19 pill.

Pfizer made the announcement on Tuesday. It is seeking approval of the drug to treat high-risk adult coronavirus patients who have developed mild to moderate symptoms.

The company says the oral antiviral is designed to block the replication of the virus. It would be used in combination with the HIV drug ritonavir.

Pfizer cited the results of a clinical test it released on November 5. The data showed the drug reduced the risk of COVID-19-related hospitalization or death by 89 percent.

Another US pharmaceutical firm, Merck, has also requested FDA approval for the emergency use of molnupiravir, an oral antiviral drug designed to prevent the development of serious symptoms in coronavirus patients. British medicines regulator authorized the use of the medicine on November 4.