Imdur

Isosorbide

This medicine is indicated for angina pectoris intended to mitigate chest pain and support cardiovascular tolerance during physical exertion.

Active ingredient
Isosorbide
Supply
Pharmacy
Route
Oral use
Form
Prolonged-release tablet
Strengths
20 · 30 · 40 · 60mg

Imdur details

Alternative names
Monit; Elantan
Therapeutic class
Nitrate Vasodilator
Pharmacological class
Nitrate
Contraindications
hypersensitivity to nitrates; concurrent use of PDE5 inhibitors; hypotension
Precautions and warnings
may impair ability to drive or operate machinery; avoid rapid position changes
Minor side effects
headache; dizziness; flushing
Moderate side effects
tachycardia; postural hypotension
Dosage forms
Prolonged-release tablet
Administration route
Oral use
Supply category
Pharmacist only, dispensed without a prescription
Manufacturer
AstraZeneca
Onset Time
30–60 minutes
Duration
8–12 hours
Storage instructions
Store below 25°C in original packaging.
Drug interactions
Sildenafil; Tadalafil; Alcohol
Age restrictions
Not recommended for children.
Pregnancy and breastfeeding
Pregnancy: Use only if clearly necessary. Breastfeeding: Consult your doctor.
Serious side effects

syncope, requires immediate medical attention; severe hypotension, requires immediate medical attention

Patient summary

This medicine is indicated for angina pectoris intended to mitigate chest pain and support cardiovascular tolerance during physical exertion.

Mechanism of action

Isosorbide mononitrate acts as a vasodilator by releasing nitric oxide, which relaxes vascular smooth muscle, reducing myocardial oxygen demand.

Where this medicine is registered

  • Singapore
  • Hong Kong
  • Thailand
  • Malaysia
  • Philippines
  • Indonesia
  • Taiwan
  • South Korea
  • Japan
  • Australia
  • New Zealand
  • UAE
  • South Africa

About Imdur

Imdur is a brand of isosorbide, a medicine used in the management of angina pectoris. The same active ingredient is also sold under brand names including Monit and Elantan, supplied as tablets in strengths from 20mg to 60mg. As a product manufactured by AstraZeneca, it helps support maintenance therapy for patients managing their heart health.

Buying Imdur online

Imdur is registered across 14 markets including Thailand, Malaysia and the Philippines, with availability also in Indonesia, Taiwan and South Korea. Generic isosorbide, often produced in India, provides a significant cost advantage compared to the original brand. For expats and those living in areas with limited access to a well stocked pharmacy, this medicine is one of the most ordered treatments across the region and can be ordered online for convenient delivery.