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Product Overview
Isosorbide Mononitrate ER (generic Imdur)
What is Isosorbide Mononitrate? Isosorbide Mononitrate (generic Imdur) is a prescription medication used to manage congestive heart failure and chest pain (angina) that is caused by coronary artery disease. It works by relaxing your blood vessels allowing more blood and oxygen to flow to the heart.
What are the most common side effects of Isosorbide Mononitrate? While adverse reactions to isosorbide mononitrate are uncommon, some patients who take the drug may experience mild side effects, including headache, dizziness, lightheadedness, nausea, and flushing.
Rare, more serious adverse events have been known to occur. This is not a complete list of side effects. If you are concerned about additional side effects, please contact your provider directly.
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Medically Reviewed By Dr. Allison Edwards, MD
Frequently asked questions about Isosorbide Mononitrate ER
What is Isosorbide Mononitrate?
Isosorbide Mononitrate (generic for Imdur) is a prescription medication known as a vasodilator. It is used to manage chest pain (angina) that is caused by coronary artery disease (a narrowing of the blood vessels that carry blood to the heart).
Vasodilators work by relaxing the blood vessels allowing more blood and oxygen to flow to the heart while lessening its workload.
What is Isosorbide Mononitrate used to treat?
Isosorbide Mononitrate is used to manage chest pain (angina) in patients who have coronary heart disease (a condition in which the blood vessels that supply blood to the heart narrow restricting blood flow).
How does Isosorbide Mononitrate work?
Isosorbide mononitrate belongs to a class of drugs known as vasodilators. Nitrates correct the imbalance between the flow of blood and oxygen to the heart and reduce the amount of work required of the heart by relaxing the veins and arteries. This helps to manage conditions like angina, in which pain is caused by the heart not receiving sufficient oxygen.
What are the most common side effects of Isosorbide Mononitrate?
The most common side effects of Isosorbide mononitrate are headache, dizziness, lightheadedness, nausea, and flushing. These will generally go away as your body adjusts to the medication. A headache is often a sign that the medication is working and your doctor may recommend treatment with over-the-counter pain relievers such as acetaminophen or aspirin. Tell your doctor if the headaches are severe or don’t go away.
To minimize lightheadedness and dizziness, stand up slowly.
Severe adverse reactions to Isosorbide mononitrate are rare, but can occur. Tell your doctor right away if you have any serious problems or allergic reactions to this medication.
This is not a complete list of side effects. For more information regarding precautions and possible side effects, please visit the National Institutes of Health’s DailyMed page for Isosorbide Mononitrate.
How long does it take for Isosorbide Mononitrate to work?
Isosorbide Mononitrate extended-release tablets only need to be taken once a day (usually in the morning) and will provide its effect gradually for the next 8 to 10 hours. Talk to your doctor if you need instant relief.
What is the typical starting dose of Isosorbide Mononitrate?
The usual starting dose is 30 mg taken once a day in the morning. The doctor will monitor your body’s response to this dosage and may increase the dose after several days. The tablets should not be chewed or crushed and should be swallowed with at least a half-glass of fluid.
Can I get Isosorbide Mononitrate online?
Yes! Talk to a provider on Sesame and get your online doctor prescription or refill ordered right away for fast and convenient pickup from a pharmacy of your choice.
Note that all prescriptions are at the discretion of your clinician.
Can I get Isosorbide Mononitrate over-the-counter?
Isosorbide Mononitrate is currently only available via prescription. This means the use of this drug must be authorized by a licensed health care provider.
Providers on Sesame can write a prescription – or refill an existing one – during a virtual or in-person visit. Depending on the medication, you can arrange for same-day pickup at a pharmacy near you. Book an online consultation with a real, licensed provider on Sesame today to determine whether or not Isosorbide Mononitrate is right for you.
Note that all prescriptions are at the discretion of your health care provider. Providers on Sesame cannot prescribe controlled substances.