You should talk with your healthcare provider prior to taking this medication if you have:
- Heart disease, including congestive heart failure
- An irregular heart rhythm that slows down the heart rate (arrhythmia), including sick sinus syndrome
- Liver disease, including liver failure or cirrhosis
- Kidney disease
- Low blood pressure
- Any allergies, including allergies to food, dyes, or preservatives.
Also, let your healthcare provider know if you are:
- Pregnant or thinking of becoming pregnant (see Cardizem and Pregnancy)
- Breastfeeding (see Cardizem and Breastfeeding).
Make sure to tell your healthcare provider about all other medicines you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Cardizem Warnings and Precautions to learn more, including information on who should not take the drug.)
People who take too much of this medication may have overdose symptoms that could include:
- Extremely low blood pressure (hypotension)
- Heart failure
- Slow heart rate (bradycardia).
If you happen to overdose, seek immediate medical attention.
(Click Cardizem Overdose for more information.)