FDA pulls authorization for Covid monoclonal antibodies The US drugs regulator has rescinded its authorisation for the monoclonal antibody treatments made by Eli Lilly and Regeneron, which proved highly effective at fighting earlier strains of Covid-19 but do not work well against the Omicron variant. ➤ "Indefensible Edict" - DeSantis Rages After Biden's FDA Restricts Use Of Monoclonal Antibody Treatments