Cardizem CD belongs to a class of medicines called calcium channel blockers. Because of their safety and effectiveness, these drugs have helped revolutionize the treatment of angina and high blood pressure.

Cardizem CD is prescribed to treat high blood pressure alone or in combination with other blood pressure pills. It is also helpful for certain forms of angina.

Other brand names for diltiazem include Cardizem SR, Dilacor XR and Tiazac.

Side Effects and Interactions

Cardizem CD is usually well tolerated with few side effects, but some people react to this drug with fluid retention, leading to swelling of the legs, feet or hands. Headache, dizziness, loss of strength, slowed heart rate, heart problems or flushing may also occur.

Other side effects include nausea, rash, constipation, increased blood sugar, sexual difficulties and depression.

The skin may be especially sensitive to sunburn, and precautions should be taken to avoid ultraviolet exposure. Report any symptoms or suspected side effects to your physician promptly.

Cardizem CD can interact with a number of other drugs, including several that are used to treat high blood pressure or heart conditions, the anticonvulsant Tegretol, the ulcer medicine Tagamet, lithium and the transplant drug Sandimmune.

The herb St. John’s wort might speed elimination of diltiazem from the body, which could reduce its effectiveness.

Check with your doctor and pharmacist to make sure Cardizem CD is safe in combination with any other drugs or herbs you take.

Special Precautions

People with liver or kidney disease should take Cardizem CD under close medical supervision and monitoring.

Some people may feel dizzy if they sit or stand up suddenly. Low blood pressure or a recent heart attack also signal serious problems.

Taking the Medicine

Cardizem CD may be taken with or without meals, once a day.

Do not stop taking Cardizem CD suddenly, as this could lead to complications. Your doctor will tell you how to taper off gradually if you no longer need this medication.

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  1. Lisa age 50

    I am having major breathing issues. Chronic cough with phelgm night and day. Wake up middle of night. For several monnths of year. Been on Diltiazem for 4 to 5 years. Stopping for 4 days to see if cough stops as per doctor.

  2. Jada

    I recently stopped my diltiazem without doctors orders. I have been eating right and exercising and the only problem is my fast rate every now and then. My pulse is between 97-107. I checked my blood pressure and I’ve got it down to 120/89. I will follow up with my Dr but I believe over time my heart will be back to normal.

  3. KDelphi

    I am on Medicaid, and the pharmacy HAS to give me generics….if unavailable, the dr. has to use something else….Medicaid is horrible. I think people should know that they are not giving good coverage.

  4. Anonymous

    I experienced these side effects with Diltiazem (generic) when my generic was changed. I had taken Dil for several years without problems. Although it took me a while to realize the problems with my feet and legs were related to the new RX, I can trace their beginnings to the new generic.
    Despite the FDA claims that generics are comparable to the branded product, they are not. I made it a point to be sure I was getting the same generic each time I filled my RX. Unfortunately, the one I was using was no longer available at my pharmacy. I had to call around only to find that generic is not available locally.
    Too many things factor into the generics we receive, but price is the major factor that determines which generics are stocked. Efficacy and side effects are not.

  5. Bill M.

    I recently got Abalation for my SVT fast heart beat, have been off of Dilitiazem for five days and feel so much better. it was affecting my lungs, couldn’t breath very well. I am surprised that I am kind of the lone ranger with my lung problem through taking Dilitiazem. I have stopped it entirely and feel 100 per cent better.
    Are there any others who have had a lung problem while taking ?

    • pelumi o.

      hey bill, are you still off the ccbs for svt ? How are you doing after the ablation?
      I was also daignosed with SVT. Thanks

    • thewitch isdead

      When you got this ablation, were there any complications?

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