Imdur 30mg Tablet

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Manufacturer AstraZeneca
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Prescription Required

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Dr. Mohd Izzat Amir Bin Awang
Reviewed byDr. Mohd Izzat Amir Bin AwangDoctor of Medicine (MD), University of Mansoura - Manchester
Dr. Chong Zhan Pong
Written byDr. Chong Zhan PongDoctor of Medicine (MD), International Medical University (IMU)

Overview

Imdur 30mg Tablet is a prescription-only medicine (POM) that contains Isosorbide mononitrate 30mg (extended-release). It is supplied as a tablet and is dispensed in Malaysia only against a valid prescription issued by a registered doctor.

Under Malaysian rules for prescription medicines, this page carries product, safety and handling information only. Your doctor or pharmacist will explain whether this medicine is suitable for you, the dose you should take, and how long you should take it.

On DoctorOnCall, Imdur 30mg Tablet is reviewed by a licensed doctor through an online consultation and dispensed by a registered pharmacist before delivery. Always follow the instructions on your prescription label and the package insert supplied with the product, and do not share this medicine with anyone else.

Directions for Use

Take Imdur 30mg Tablet once daily in the morning, with or without food. Swallow the extended-release tablet whole with water; do not crush, chew, or break it, as this can release the full dose too quickly. This medicine is for preventing angina and does not work fast enough to treat a sudden angina attack – use your doctor-prescribed fast-acting nitrate (e.g. sublingual GTN) for that purpose.

Dosage

The usual starting dose of Imdur 30mg Tablet is 30mg once daily in the morning, which your doctor may increase to 60mg, and occasionally up to 120mg, once daily depending on your response. Dosing is individualised to allow a nitrate-free interval each day, which helps prevent tolerance (reduced effectiveness). Always follow your doctor’s prescribed schedule.

Side Effects

  • Headache
  • Dizziness or light-headedness
  • Low blood pressure
  • Flushing (warmth or redness in the face)
  • Fatigue
  • Nausea

Contraindications

  • Known hypersensitivity to isosorbide mononitrate or other nitrates
  • Use of PDE5 inhibitors such as sildenafil, tadalafil, or vardenafil, or the pulmonary hypertension medicine riociguat (risk of severe, life-threatening low blood pressure)
  • Severe hypotension or uncorrected hypovolaemia (low blood volume)
  • Hypertrophic obstructive cardiomyopathy
  • Severe anaemia

Drug / Food Interactions

  • PDE5 inhibitors (sildenafil, tadalafil, vardenafil) must never be combined with this medicine due to the risk of dangerous, severe hypotension
  • Riociguat and other soluble guanylate cyclase stimulators are contraindicated in combination
  • Alcohol can worsen dizziness and low blood pressure
  • Other blood pressure-lowering medicines or vasodilators may add to the blood-pressure-lowering effect

Quick Tips

  • Take at the same time every morning to maintain the nitrate-free interval overnight
  • Sit or lie down at the first sign of dizziness or light-headedness to avoid falls
  • Never take this medicine together with sildenafil, tadalafil, vardenafil, or similar medicines
  • Do not crush or chew the extended-release tablet

Ingredients / Active Ingredients

  • Isosorbide mononitrate 30mg (extended-release)

Safety Advice

Pregnancy

Use With Care

This medicine should be used cautiously during pregnancy. Monitoring may be required.

Breastfeeding

Limited Data

Limited data on excretion in breast milk. Consult a doctor before use.

Kidney

Generally Safe

Generally safe, but caution may be required in some patients.

Liver

Use With Care

Use cautiously. Liver function monitoring may be required.

Alcohol

Not Advisable

It is not advisable to consume alcohol while taking this medicine.

Driving

Use With Care

Use caution while driving until you know how this medicine affects you.

Frequently Asked Questions

Product Specifications

BrandAstraZeneca
ManufacturerAstraZeneca
ClassificationPrescription medicine
Ingredients / Active IngredientsIsosorbide Mononitrate
Pack Size15s, 30s
Shelf LifeUse this product before the expiry date stated on the packaging. Do not use the medicine if the expiry date has passed.
Storage InstructionsStore below 30°C in a dry place, away from direct sunlight and out of reach of children.

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