Imdur Oral : Uses, Side Effects, Interactions


GENERIC NAME(S): Isosorbide Mononitrate


Isosorbide Mononitrate, sold under the trade name Imdur among others. Isosorbide Mononitrate is used to prevent chest pain (angina) in patients with a certain cardiovascular condition (coronary artery disease). This drug is related to a class of drugs called nitrates. It works by relaxing and widening the blood vessels so that the blood flows more easily to the heart.

This drug will not relieve the chest pain once it happens. Also, to prevent chest pain, it is not intended to take it right before physical activity (eg exercise or sexual intercourse). Other drugs may be prescribed by your doctor for these conditions. Consult your doctor for more details.

How To Use Imdur

Take Isosorbide Mononitrate or Imdur guided by your doctor, usually twice a day. Every day, take the first dose when you get up, then take second dose after 7 hours. It is important to take medication at the same time each day. Do not change dosing time until your doctor is directed.

Use this drug regularly to get the most benefit. To help you remember, take it every day at the same time. Do not stop taking it without consulting your doctor. When the drug suddenly stops, some conditions may get worse. Your dose may need to be gradually decreased.

Although unlikely, when Imdur is used for a long time, it can also not work and may require different doses. Tell your doctor if this medicine stops working well (for example, you are having more or chest pain more often).

Side Effects

Headache, dizziness, lighthouse, nausea, and flushing may occur because your body gets adjusted in this medicine. If any of these effects persists or worsens, tell your doctor or pharmacist immediately.

Headache is often an indication that this drug is working. Your doctor may recommend treating headache with an over-the-counter pain reliever (such as acetaminophen, aspirin). If the headache continues or becomes severe, tell your doctor immediately.

To reduce the risk of dizziness and lighthouse, slowly rise while sitting or lying down from the position of lying.

Remember that your doctor has prescribed isosorbide mononitrate or Imdur because he or she has decided that the benefit is higher than the risk of side effects. Many people using this drug do not have serious side effects.

Tell your doctor immediately if you have a serious side effect, including: unconsciousness, fast / irregular / fast heartbeat

A very serious allergic reaction to this drug is rare. However, if you see symptoms of a serious allergic reaction, get medical help immediately, including: granular, itching / swelling (especially the face / tongue / throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you do not list other effects above, contact your doctor or pharmacist.

In America – Call your doctor for medical advice about side effects. You can notify the FDA of side effects on 1-800-FDA-1088 or

In Canada – Call your doctor for medical advice about side effects. You can report the health effects of Canada on 1-866-234-2345.


Before taking imdur, tell your doctor or pharmacist whether you are allergic to it; Or for similar drugs (such as isosorbide dinitrate,  nitroglycerin);  Or if you have any other allergens. This product can have passive elements, which can cause allergic or other problems. Talk to your pharmacist for more details.

Before using this drug, tell your doctor or pharmacist your medical history, in particular: low blood pressure.

Imdur can make you dizzy. Alcohol or marijuana can make you feel more dizzy. Unless you can safely do it, do not drive, use machinery, or do anything that requires caution. Limit alcoholic beverages. If you are using marijuana, talk to your doctor.

Before surgery, tell your doctor or dentist about all the products you use (including Prescription Drugs, nonprescription Drugs and Herbal Products).

Older adults may be more susceptible to the side effects of this drug, especially dizziness and dysfunction, which can increase the risk of falling.

During pregnancy, this drug should be used only when it is clearly necessary. Discuss the risks and benefits with your doctor.

It is unknown if this medicine passes in breast milk. Consult your doctor before breastfeeding.


Drug interactions can change how your medicines work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescriptions / non-prescription medicines and herbal products) and share it with your doctor and pharmacist. Do not start, stop or change any drug supplements without the approval of your doctor.

Some of the products that interact with this drug include: Erectile dysfunction – E.D. or pulmonary hypertension (such as sildenafil, tadalafil), medicines to treat riociguat.

Some products contain elements that can damage your heart failure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough and cold products, diet aids, or NSAIDs such as ibuprofen / naproxen).

Isosorbide mononitrate or Imdur is very similar to isosorbide dinitrate. Do not use medications containing isosorbide dinitrate while using isosorbide mononitrate.

This drug can interfere with some laboratory tests (including cholesterol levels), possibly due to wrong examination results. Ensure that the lab staff and all your doctors know that you use this medicine.

Over Dose

If someone is treated and has serious symptoms like having trouble going out or breathing, call 911. Otherwise, call the Poison Control Center immediately. US residents can call their local venom control center at 1-800-222-1222. Canadians can call a provincial poison control center. Symptoms of overdose may include: slow heartbeat, change in vision, severe nausea / vomiting, sweating, cold / sticky skin, fingers / toes / lips


Do not share this medication with others.

Laboratory and / or medical tests (such as blood pressure) should be done periodically to monitor your progress or to check side effects. Consult your doctor for more details.

Changes in lifestyle, such as dietary changes, exercise and smoking, can help to improve this medicine. Talk to your doctor or pharmacist about lifestyle changes that can benefit you.

Missed Dose

If you miss a dose, then as soon as you remember, take it. If it is within 2 hours of the next dose, then leave the thesis dose and start your normal dose schedule again. Do not double the dose to catch up.


Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets.

Until instructed to do so, do not flush the medicines in the toilet and do not drain them. When this period expires or does not need it, then properly release this product. Consult your pharmacist or local waste disposal company.

Disclaimer: DrLinex has made every effort to ensure that all information is factually accurate, comprehensive and up-to-date. However, this article should not be used as a licensed health care professional’s choice of knowledge and expertise. You should always consult your doctor or other health care professional before taking any medication. The information given here is subject to change and it has not been used to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions or adverse effects. The lack of warning or other information for any drug does not indicate that the combination of medicine or medication is safe, effective or appropriate for all patients or all specific uses.

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