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Diltiazem

Diltiazem

What is diltiazem?

Diltiazem is a calcium channel blocker. It works by relaxing the muscles of your heart and blood vessels.

Diltiazem is used to treat hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders.

Diltiazem may also be used for purposes not listed in this medication guide.

Why is this medication prescribed?

Diltiazem is used to treat high blood pressure and to control angina (chest pain). Diltiazem is in a class of medications called calcium-channel blockers. It works by relaxing the blood vessels so the heart does not have to pump as hard. It also increases the supply of blood and oxygen to the heart.

High blood pressure is a common condition, and when not treated it can cause damage to the brain, heart, blood vessels, kidneys, and other parts of the body. Damage to these organs may cause heart disease, a heart attack, heart failure, stroke, kidney failure, loss of vision, and other problems. In addition to taking medication, making lifestyle changes will also help to control your blood pressure. These changes include eating a diet that is low in fat and salt, maintaining a healthy weight, exercising at least 30 minutes most days, not smoking, and using alcohol in moderation.

How it works

Diltiazem belongs to a class of drugs called calcium channel blockers. A class of drugs refers to medications that work similarly. They have a similar chemical structure and are often used to treat similar conditions.

Diltiazem works by relaxing the blood vessels in your heart and body. This reduces your blood pressure.

This drug also lowers your heart rate and dilates your coronary arteries. This means that your heart doesn’t have to work as hard to pump blood throughout your body. These effects, combined with lowering your blood pressure, help to reduce your chest pain.

Side Effect

Major and Minor Diltiazem Side Effect

  • dizziness
  • lightheadedness
  • weakness
  • tired feeling
  • nausea
  • upset stomach
  • flushing (warmth, redness, or tingly feeling)
  • sore throat
  • cough
  • stuffy nose
  • headache

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of diltiazem can be fatal. Overdose symptoms may include slow heartbeat, weakness, chest pain, shortness of breath, or fainting.

How should I keep diltiazem stored?

Tablets, capsules and powder for injection should be stored at room temperature, 15 C and 30 C (59 F and 86 F). Solution for injection should be stored at 2 C and 8 C (36 F and 46 F).

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