Isosorbide immediate-release tablets are used for the management of angina (chest pain) in people who have coronary artery disease (narrowing of the blood vessels that supply blood to the heart). Isosorbide extended-release (long-acting) tablets and extended-release capsules are used for the management of chest pain in people who have coronary artery disease. Isosorbide can only be used to prevent angina; it cannot be used to treat an episode of angina once it has begun. Isosorbide is in a class of medications called vasodilators. It works by relaxing the blood vessels so the heart does not need to work as hard and therefore does not need as much oxygen.
Isosorbide comes as a tablet, an extended-release (long-acting) tablet, and an extended-release capsule to take by mouth. The tablet usually is taken two or three times daily. The extended-release tablet usually is taken once daily in the morning. The extended-release capsule usually is taken once daily.
Do not crush, chew, or divide the extended-release tablets or capsules. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take isosorbide exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Isosorbide controls chest pain but does not cure coronary artery disease. Continue to take isosorbide even if you feel well. Do not stop taking isosorbide without talking to your doctor.
Isosorbide may not work as well after you have taken it for some time or if you have taken many doses. Your doctor will schedule your doses so that there is a period of time every day when you are not exposed to isosorbide. If your chest pain attacks happen more often, last longer, or become more severe at any time during your treatment, call your doctor.
Isosorbide tablets are also used with other medications to treat heart failure. Talk to your doctor about the possible risks of using this medication for your condition.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Unless your doctor tells you otherwise, continue your normal diet.
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
worsening chest pain
difficulty breathing or swallowing
Isosorbide may cause other side effects. Call your doctor if you have any unusual problems while you are using this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom).Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
slow or pounding heartbeat
shortness of breath
cold, clammy skin
loss of ability to move the body
coma (loss of consciousness for a period of time)
Keep all appointments with your doctor.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Revised - 03/15/2015
AHFS® Consumer Medication Information. © Copyright, 2015. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.