Dofetilide and cimetidine together can cause life-threatening heart rhythms. This interaction increases QT prolongation risk by up to 4 times, leading to torsades de pointes. Learn why this combo is strictly contraindicated and what to use instead.
Fluoroquinolones and macrolides can cause dangerous QT prolongation, leading to life-threatening arrhythmias. Learn how to monitor ECGs, recognize high-risk patients, and choose safer alternatives to prevent cardiac events.
Antipsychotics can prolong the QT interval, raising the risk of dangerous heart rhythms. Learn which drugs carry the highest risk, how to monitor for QT prolongation, and how to balance mental health benefits with cardiac safety.