Medically reviewed by Drugs.com. Last updated on May 30, 2022.
Commonly used brand name(s)
In the U.S.
- Imdur
- Imdur ER
- Ismo
- Monoket
Available Dosage Forms:
- Tablet, Extended Release
- Tablet
Therapeutic Class: Antianginal
Chemical Class: Nitrate
Uses for isosorbide mononitrate
Isosorbide mononitrate is used to prevent angina (chest pain) caused by coronary artery disease (heart disease). It does not work fast enough to relieve the pain of an angina attack that has already started.
Isosorbide mononitrate belongs to the group of medicines called nitrates. It works by relaxing the blood vessels and increasing the supply of blood and oxygen to the heart while reducing its workload. When used regularly on a long-term basis, this helps prevent angina attacks from occurring.
Isosorbide mononitrate is available only with your doctor's prescription.
Before using isosorbide mononitrate
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For isosorbide mononitrate, the following should be considered:
Allergies
Tell your doctor if you have ever had any unusual or allergic reaction to isosorbide mononitrate or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Pediatric
Appropriate studies have not been performed on the relationship of age to the effects of isosorbide mononitrate in the pediatric population. Safety and efficacy have not been established.
Geriatric
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of isosorbide mononitrate in the elderly. However, elderly patients are more likely to have severe low blood pressure and age-related liver, kidney, or heart problems, which may require caution and an adjustment in the dose for patients receiving isosorbide mononitrate.
Breastfeeding
There are no adequate studies in women for determining inf...

