The U.S. Food and Drug Administration is now requiring two common COVID-19 vaccines to update their warning labels to include information on two rare heart side effects.   Myocarditis, or

The Food and Drug Administration (FDA) has expanded its warnings on Pfizer and Moderna COVID-19 vaccines about the risks of two heart conditions. These manufacturers, the two main COVID-19 vaccine providers,

The Food and Drug Administration said Wednesday it was expanded existing warnings on the two leading COVID vaccines about a rare heart side effect mainly seen in young men, despite previous guidance from the Centers for Disease Control and Prevention that said there was no increased risk.