Tell your doctor if you have ever had an allergic reaction to any form of diltiazem in the past, or ever suffered from kidney disease, liver disease, or other diseases of the heart or blood vessels such as sick sinus syndrome, aortic stenosis, congestive heart failure, heart block, low blood pressure, or coronary artery disease.
 
You may not be able to take diltiazem, or you may require a dosage adjustment or special monitoring during treatment, if you have any of the conditions listed above.

Talk to your doctor about consuming grapefruit or grapefruit juice while you are taking diltiazem. Diltiazem can interact with grapefruit and grapefruit juice and the interaction may have dangerous effects.

Diltiazem is in the FDA pregnancy category C. This means that it is not known whether diltiazem will be harmful to an unborn baby. Do not take diltiazem without first talking to your doctor if you are pregnant or could become pregnant during treatment.

Diltiazem passes into breast milk and may affect a nursing infant. Do not take diltiazem without first talking to your doctor if you are breast-feeding a baby.

 

FDA Information

Why is this medication prescribed?

Other uses for this medicine

Dosage and using this medicine

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What storage conditions are needed for this medicine?

In case of an emergency/overdose