Generic Name: Isosorbide

  • What is this medication and its most common uses?

    Imdur is a medicine used to prevent chest pain associated with coronary artery disease (narrowing of the small blood vessels that supply blood and oxygen to the heart).

  • What should I know when beginning and continuing on this medication?

    How does this medication work?

    Imdur works by relaxing the blood vessels in your muscles, including your heart.

    What are the beneficial effects of this medication and when should I begin to have results?

    What: Imdur has been shown to improve your exercise ability, such as the distance you are able to walk.

    When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's directions. It is important that you take Imdur exactly as your healthcare provider has prescribed.

    How do I know it is working?

    You may feel an improvement in your chest pain after you start taking Imdur. This is a good indicator that the medicine is working. Your healthcare provider may ask you questions to assess how well your symptoms are controlled.

  • What are the possible side effects of this medication?

    The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.

    More common side effects may include: headache, dizziness.

    Less common side effects may include:

    Severe low blood pressure, especially if you also take a medicine called sildenafil.

    Imdur may cause lightheadedness, slow heart rate, or increased chest pain.

  • Who should not take this medication?

    Do not take Imdur if you are allergic to it or any of its ingredients.

    Do not take Imdur if you experienced allergic reactions to other similar medicines (such as nitroglycerin).

  • What should I tell my healthcare provider before I take the first dose of this medication?

    Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Imdur. Also, talk to your healthcare provider about your complete medical history, especially if you have low blood pressure or heart problems (such as heart failure or a recent heart attack).

  • What is the usual dosage?

    The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.

    Adults: The recommended starting dose is 30 or 60 milligrams once a day. Your healthcare provider may increase your dose as needed.

  • How should I take this medication?

    Take Imdur exactly as prescribed by your healthcare provider. Do not change your dose without first talking to your healthcare provider.

    Swallow Imdur tablets whole with a half-glassful of liquid. Do not chew or crush the tablets.

    Take Imdur when you wake up in the morning.

  • What should I avoid while taking this medication?

    Do not change your dose or stop taking Imdur without first talking to your healthcare provider.

  • What are the possible food and drug interactions associated with this medication?

    If Imdur is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your healthcare provider before combining Imdur with the following: alcohol or blood pressure/heart medications known as calcium channel blockers (such as amlodipine or nifedipine).

  • May I receive this medication if I am pregnant or breastfeeding?

    The effects of Imdur during pregnancy and breastfeeding are unknown. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of this medication?

    If you miss a dose of Imdur, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

  • How should I store this medication?

    Store at room temperature.