FDA Updates Celexa Dosing and Warnings
In August 2011 , the agency announced that Celexa should no longer be used at doses higher than 40 mg per day because it could cause dangerous changes in the electrical activity of the heart or "QT prolongation." The drug label was changed to describe caution that needs to be taken in patients with certain conditions because of the risk of QT prolongation. The new label also describes that patients over 60-years-old, should use lower doses.
In 2011, about 7.2 million patients received a prescription for Celexa from U.S. outpatient retail pharmacies.