What is Isradipine: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Isradipine overview

BRAND NAMES:

  • Dynacirc

Generic Names:

  • Isradipine

Uses:

  • Treats high blood pressure. This medicine is a calcium channel blocker.

Therapeutic Classes:

  • Cardiovascular Agent, Antihypertensive, Antianginal

Forms:

  • Capsule, Long Acting Tablet

How it’s taken:

  • By mouth

What is Isradipine used for?

What form(s) does Isradipine come in

  • Capsule

  • Long Acting Tablet

What are common Isradipine doses?

  • Capsule 2.5MG

  • Capsule 5MG

Common Isradipine prescriptions

  • Isradipine
    2.5mg capsule

  • Isradipine
    5mg capsule

How to take Isradipine

  • Swallow the capsule or tablet whole. Do not break, crush or chew it.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Swallow the capsule or tablet whole. Do not break, crush or chew it.

What to do if you miss a dose of Isradipine

Isradipine contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to isradipine.

Isradipine warnings

  • If you take the extended-release tablet, part of the tablet may pass into your stools. This is normal and is nothing to worry about.

  • This medicine could lower your blood pressure too much, especially when your first use it or if you are dehydrated. Stand or sit up slowly if you feel dizzy or lightheaded.

  • Tell your doctor if you are pregnant or breastfeeding, or if you have heart failure, stomach problems, or liver disease.

  • Do not stop using this medicine suddenly without asking your doctor, even if you feel well. This medicine will not cure high blood pressure, but it will help keep it in normal range. You may have to take blood pressure medicine for the rest of your life.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Isradipine interactions

  • If you take the extended-release tablet, part of the tablet may pass into your stools. This is normal and is nothing to worry about.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Do not stop using this medicine suddenly without asking your doctor, even if you feel well. This medicine will not cure high blood pressure, but it will help keep it in normal range. You may have to take blood pressure medicine for the rest of your life.

  • This medicine could lower your blood pressure too much, especially when your first use it or if you are dehydrated. Stand or sit up slowly if you feel dizzy or lightheaded.

  • Some medicines can affect how isradipine works. Tell your doctor if you are using the following: CimetidinePropranololRifampicinA beta-blocker

Isradipine side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Chest pain that may spread, trouble breathing, nausea, unusual sweating, fainting

  • Fast, irregular, or pounding heartbeat

  • Rapid weight gain, swelling in your hands, ankles, or feet

  • Lightheadedness or fainting

Less Serious Side Effects

  • Headache, tiredness

  • Warmth or redness in your face, neck, arms, or upper chest

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