Health24
August 25, 2011

High doses of the popular antidepressant Celexa (known as Cipramil in South Africa) can cause potentially fatal abnormal heart rhythms and should no longer be prescribed to patients, the US Food and Drug Administration has said.

Doses of Celexa (citalopram hydrobromide) greater than 40 milligrams a day can cause changes in the electrical activity of the heart, which can lead to abnormal heart rhythms, including a potentially deadly arrhythmia known as Torsade de Pointes, according to the agency.

Patients at high risk for changes in the electrical activity of the heart include those with pre-existing heart conditions (including congestive heart failure) and those prone to low levels of potassium and magnesium in the blood, the FDA said.

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