Cardizem

(Diltiazem)

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3.5/ 5 average rating with 105 reviewsforDiltiazem
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Lowers blood pressure and controls heart rate.

Skip Upsides & Downsides section. Skip to side effects section.

Our bottom line

Diltiazem works well to lower blood pressure and prevent chest pain, but you have to be okay with avoiding alcohol. You can't miss doses, and you might get persistent swelling.

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Quick facts about Diltiazem
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (diltiazem)

Upsides

  • A first-choice blood pressure treatment for many people.
  • Calcium channel blockers work especially well for African Americans to lower blood pressure.
  • You can take it alone or with other medicines to help lower blood pressure.
  • Lowers the risk of heart attack and stroke.
  • Prevents heart-related chest pain (angina) if you take it regularly.
  • Treats certain abnormal heart rhythms.
People’s experience with Diltiazem

105reviews so far. What do you think?

Downsides

  • Calcium channel blockers can cause swelling in your limbs. If this happens for you, it probably won't get better over time, so talk to your doctor about alternatives if it bothers you.
  • Women are more likely to have side effects (especially swelling) from Diltiazem than men.
  • You can't miss doses. Stopping Diltiazem suddenly can cause your blood pressure to go up suddenly, which raises the risk of heart attack and stroke.
  • Some brands of Diltiazem have to be taken with food, so listen carefully for instructions from your doctor or pharmacist.
  • Not a good medication for you if you drink alcohol.
How it works

Diltiazem is a calcium channel blocker. It lowers blood pressure by slowing your heart rate and relaxing your blood vessels. Your heart gets more oxygen and doesn't have to work as hard to pump, which can relieve chest pain.

Quick facts about Diltiazem
  • Drug class: Cardiovascular
  • Rx status: Prescription only
  • Generic status: Lower-cost generic available (diltiazem)

Used for

Dosage forms

  • Pill
  • Extended release
  • Extended release capsule
People’s experience with Diltiazem

105reviews so far. What do you think?

Prices and coupons

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Side effect rates for Cardizem (Diltiazem)

  • Edema
    5%5%
  • Headache
    5%5%
  • Dizziness
    4%4%
  • Asthenia
    3%3%
  • First degree AV block
    2%2%
  • Bradycardia
    2%2%
0%
10%
20%
30%
40%
50%
60%
70%
80%
Where we got our data »

The placebo bar shows how common a side effect was for people taking a sugar pill instead of Diltiazem.

Cardizem (Diltiazem)
Placebo

People taking Diltiazem felt side effect more

People taking Diltiazem felt side effect less

No difference

Risks and Warnings for Cardizem (Diltiazem)

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  • There have been rare reports of serious up to life-threatening skin rashes in patients who have taken Cardizem (Diltiazem). If you notice a sudden severe rash, tell your doctor immediately.

Pharmacist Q&A

Cardizem (Diltiazem) questions for

Frequently Asked Questions

This medication treats coronary artery disease (CAD) and treats and prevents chest pain (angina).

Who is this drug for?

This medication treats coronary artery disease (CAD) and treats and prevents chest pain (angina).

Common concerns from people taking Cardizem (Diltiazem)

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Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

See the FDA package insertSee pregnancy safe medications
Tip: Always talk with your doctor before you take any medication while pregnant.
FDA pregnancy category for Diltiazem
CWeigh risks vs. benefits
Interactions
  • Interacts with the cholesterol medicine Simvastatin.
Alcohol
  • Not a good medication for you if you drink alcohol.
Kidneys and liver
  • There have been reports of liver damage within the first eight weeks of Cardizem (Diltiazem), particularly if you have a history of liver disease. Your doctor may monitor your liver.
Sleep
  • Worth it
    Worked well
    Low hassle
    Reviewed diltiazemon 9/3/2019Take right before bed, caused some minor drowsiness
    32
    Man
    Two years or more
    Abnormal heart rhythm