What is isradipine?
Isradipine is in a group of drugs called calcium channel blockers. It works by relaxing the muscles of your heart and blood vessels.
Isradipine is used to treat high blood pressure (hypertension). It is sometimes given with other blood pressure medications.
Isradipine may also be used for purposes other than those listed in this medication guide.
You should not take this medication if you are allergic to isradipine.
Before taking isradipine, tell your doctor if you are allergic to any drugs, or if you have:
- kidney disease;
- liver disease;
- congestive heart failure; or
- a narrowing or blockage in your digestive tract.
If you have any of these conditions, you may need a dose adjustment or special tests to safely take isradipine.
FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Isradipine can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Isradipine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
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Seek emergency medical attention if you think you have used too much of this medicine.
Overdose symptoms may include fast heart rate, sluggish feeling, or feeling like you might pass out.
Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.
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Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- feeling like you might pass out;
- feeling short of breath, even with mild exertion;
- swelling in your hands and feet;
- fast or pounding heartbeats; or
- chest pain.
Less serious side effects may include:
- warmth, redness, or tingly feeling under your skin;
- weakness, tired feeling;
- nausea, vomiting, diarrhea, upset stomach; or
- skin rash or itching.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
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Before taking isradipine, tell your doctor if you are using any of the following drugs:
- cimetidine (Tagamet, Tagamet HB);
- fentanyl (Duragesic, Ionsys, Actiq); or
- rifampin (Rifadin, Rimactane, Rifater).
This list is not complete and there may be other drugs that can interact with isradipine. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Dynacirc, Dynacirc CR, and isradipine
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Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04