Last updated on April 15th, 2024

General Information

Imdur is a member of the nitrate medication class. Blood arteries dilate (widen) when Imdur is taken, facilitating easier blood flow and heart pumping. Additionally, this treatment is recommended to stop angina attacks (chest discomfort). However, Imdur won’t treat angina that has already started.

Your doctor may prescribe this medication for different reasons. If you would like additional information on this medication, contact your doctor.

Even if you feel that Imdur is helping your condition, you should continue treatment as directed by your doctor. If you stop taking the drug too soon, it could make things worse. Until you know how this drug affects you, take caution when operating machinery, driving, climbing, or performing other risky actions. Avoid consuming alcohol. Before providing Imdur to a child, always get in touch with a medic.

Visit your physician regularly for routine blood tests and check your blood pressure and pulse rate regularly.

If this medication is taken in the final six months of pregnancy, it may cause significant harm to the fetus, including death. If you become pregnant or suspect you could be pregnant, let your doctor know right away.

Elderly patients should exercise caution when using this medication, as they may be more susceptible to its side effects, particularly dizziness.

Before taking low-sodium or salt alternative products, speak with your doctor. You might feel lightheaded or sleepy.

Consult a physician if any of the following apply to you or have previously affected you:

  • hypotension;
  • congestive heart failure;
  • allergy to Imdur or other dyes; 
  • kidney problems; medications; foods; or preservatives.


How to Take

Imdur is routinely taken at the same time every day, either with or without food.

Don’t give this medication to anyone else. Please take it as prescribed by your doctor, neither more nor less.

Any medication used in excess might have detrimental effects on your health. Get in touch with your healthcare provider right away if you suspect an overdose.

When used in excess, this medication may result in the following side effects: convulsions (seizures), fever, lightheadedness, nausea, breathing difficulties, vomiting, bloody diarrhea, headaches, sweating, stomach pain, clammy or cold skin, fainting, rapid or pounding heartbeats, or confusion. Imdur overdoses can be lethal.

Try to take the dose as soon as you remember if you miss it. Take just one dose if it’s time for your next one. The dosage doesn’t need to be doubled.


Interactions could happen with:

  • a beta-blocker, such as labetalol (Trandate, Normodyne), propranolol (InnoPran, Inderal), nadolol (Corgard), sotalol (Betapace), atenolol (Tenoretic, Tenormin), metoprolol (Toprol, Lopressor), and other blood pressure medications;
  • a calcium channel blocker, including nifedipine (Procardia, Nifedical), verapamil (Covera, Calan, Verelan, Isoptin), diltiazem (Cardizem, Cartia), and felodipine (Plendil);
  • a drug used to treat erectile dysfunction, such as ergotamine (Cafergot, Ergomar, and others), dihydroergotamine (D.H.E. 45, Migranal), or vardenafil (Levitra).

This list of interactions may be incomplete. Give your doctor a complete inventory of all the medications, herbal remedies, nutritional supplements, and over-the-counter medications you take. Additionally, let them know whether you smoke, take illegal substances, or drink alcohol. Certain things might interfere with your medication.

Serious and Less Serious Side Effects

If you observe any of the following, get in touch with your doctor right away.

Serious side effects include an allergy that makes breathing difficult, a skin rash, lips, tongue, or cheeks swelling, itching or hives, and the feeling that you might pass out. Among other serious side effects are angina discomfort, blue-colored skin, breathing difficulties, fatigue, and an irregular heart rate.

Less severe adverse effects:

  • stiffness or soreness in the joints or muscles;
  • dry mouth, headache, and slight vertigo;
  • hot flashes, redness, warmth, tingling beneath your skin, nausea, vomiting, diarrhea, and constipation.

Other side effects may occur; this is not an exhaustive list. Tell your doctors about all the side effects you notice.

How to Store

Imdur is to be kept in a firmly closed container at room temperature, between 15 and 30 degrees Celsius (59 and 86 degrees Fahrenheit). It should be kept out of light, heat, and moisture, away from sinks and bathrooms, away from animals, and out of children’s reach.

You should speak with your doctor before using this medication. This page does not aim to cover all safety measures, medication interactions, side effects, usage, recommendations, allergic reactions, or alerts.


Is it possible to chew or crush Imdur to make swallowing easier? 

Imdur shouldn’t be broken, chewed, or crushed before being swallowed. Interfering with the medication’s extended-release mechanism could cause an excessive amount of the medicine to be released at once and raise the possibility of side effects. Imdur pills should always be taken whole with a full glass of water.

Is it safe to use machinery or drive after taking Imdur? 

Imdur may make you feel lightheaded or dizzy, significantly if your dosage is increased or when you first start taking it. These side effects may affect your ability to drive or operate machinery safely. If you encounter these adverse effects, it’s crucial to steer clear of these actions. Use caution while mixing Imdur with alcohol and certain drugs, as they can exacerbate these effects. Talk to your doctor if you worry about operating machinery or driving while taking Imdur.

When taking Imdur, are there any food restrictions? 

There are no particular dietary restrictions when taking Imdur. However, since alcohol might raise the risk of adverse effects, including lightheadedness and dizziness, it’s crucial to keep a nutritious diet and abstain from excessive drinking. Furthermore, grapefruit and grapefruit juice may interact with Imdur; therefore, avoid them unless your doctor instructs you otherwise.

What should I do if taking Imdur gives me a terrible headache? 

Seek immediate medical treatment if you suffer from a severe headache while taking Imdur, especially if other symptoms like blurred vision, confusion, or fainting accompany it. Severe headaches may indicate a dangerous condition like low blood pressure or elevated intracranial pressure. Your doctor might need to suggest different therapies or change your dosage.

0 0 votes
Article Rating
Notify of
Inline Feedbacks
View all comments