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U.S. Department of Health and Human Services

Safety

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Calan (verapamil hydrichloride) intravenous injection and tablets

Detailed View: Safety Labeling Changes Approved By FDA Center for Drug Evaluation and Research (CDER) – April 2010

 

Summary View

 

PRECAUTIONS

Drug Interactions
  • Clonidine: Sinus bradycardia resulting in hospitalization and pacemaker insertion has been reported in association with the use of clonidine concurrently with verapamil. Monitor heart rate in patients receiving concomitant verapamil and clonidine.