The Antidepressant Heart Rhythm Fear That 52,000 Patients Didn’t Confirm

Key Takeaway

Escitalopram and amitriptyline do lengthen the QTc interval by a few milliseconds. Across more than 52,000 trial participants, however, antidepressants did not raise early major cardiovascular events or non-suicidal death. The ECG shift is real, but the early clinical danger in typical trial patients is not. Choose by individual risk, not reflexive fear.

The ECG That Stalls a Prescription

She is 52, newly diagnosed with major depression, and she sits across from me holding an ECG her cardiologist ordered last year. Her QTc is 438 milliseconds, normal by any standard. Still, the conversation stalls. She has read that escitalopram can disturb heart rhythm, and I feel the familiar hesitation that years of prescribing warnings have trained into all of us. The fear has real origins: tricyclic overdoses, regulatory dose limits on citalopram, and case reports of torsades de pointes. Yet a new analysis of 52,398…