Imdur 30mg Tablet
Rx- Fast Delivery
- Muslim-Friendly
- FDA Approved
- Secure Payment
Prescription Required
Overview
Imdur 30mg Tablet contains isosorbide mononitrate 30mg in an extended-release (ER) formulation, a long-acting nitrate used to prevent angina (chest pain) caused by coronary heart disease. It is used for the long-term prevention of angina attacks and is not intended to relieve an attack that has already started.
Isosorbide mononitrate is converted in the body to nitric oxide, a substance that relaxes and widens blood vessels. This lowers the volume of blood returning to the heart and widens the coronary arteries, reducing the heart’s workload and improving blood flow to the heart muscle, which helps prevent angina.
How it Works
Once converted to nitric oxide, isosorbide mononitrate activates an enzyme in vascular smooth muscle that raises cyclic GMP levels, causing the muscle to relax. This dilates veins more than arteries, reducing the amount of blood returning to the heart (preload) and the heart’s oxygen demand, while also dilating the coronary arteries to improve oxygen supply to the heart muscle.
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.
Shelf Life
Use this product before the expiry date stated on the packaging. Do not use the medicine if the expiry date has passed.
Storage Instructions
Store below 30°C in a dry place, away from direct sunlight and out of reach of children.
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
Frequently Asked Questions
What is Imdur 30mg Tablet used for?
Imdur 30mg Tablet is used to prevent angina attacks (chest pain from reduced blood flow to the heart) in people with coronary heart disease. It is a preventive, long-term treatment rather than a rescue medicine.
Can I use this medicine to treat an angina attack that has already started?
No. This extended-release tablet acts too slowly for sudden attacks. Use the fast-acting nitrate your doctor has prescribed for an acute attack, and seek medical attention if the pain does not settle.
Why do I get headaches when I start this medicine?
Headache is a common and expected effect because the medicine widens blood vessels, including those in the head. It usually becomes milder after the first few days; simple pain relief and continuing treatment as advised by your doctor usually helps.
Can I take this medicine with sildenafil or similar medicines for erectile dysfunction?
No. Combining nitrates with sildenafil, tadalafil, vardenafil, or similar medicines can cause a severe and potentially life-threatening drop in blood pressure. Always tell every doctor and pharmacist that you take this medicine.
What should I do if I miss a dose of Imdur 30mg Tablet?
Take the missed dose as soon as you remember that morning. If it is already afternoon or close to your next dose, skip the missed dose and resume your normal morning schedule – do not double the dose or take it late in the day.
Can I buy Imdur 30mg Tablet from DoctorOnCall?
Yes, Imdur 30mg Tablet is available through DoctorOnCall, a licensed online pharmacy serving our Malaysian and Singaporean customers. As this is a prescription medicine, you will need to complete an online consultation so a doctor can assess your suitability and issue a valid prescription before the order is processed. This ensures the medicine is appropriate for your condition and used under proper medical supervision, whether you are ordering from Malaysia or Singapore.
Is the medication provided by DoctorOnCall genuine and safe to use?
DoctorOnCall sources its medicines through appropriate licensed pharmacy supply channels for our Malaysian and Singaporean customers. All orders are dispensed and checked by a registered pharmacist before delivery. Always use Imdur 30mg Tablet according to your doctor’s instructions and the information provided with the product.
What payment methods does DoctorOnCall accept?
We accept payment via Online Banking, Credit Card, and e-Wallets (Boost, GrabPay) for our Malaysian and Singaporean customers, so you can choose whichever method is most convenient for you at checkout.
Does DoctorOnCall provide an installment payment plan for Imdur 30mg Tablet?
DoctorOnCall provides an installment payment plan for eligible Malaysian and Singaporean customers, where applicable. Available plans, eligibility, and terms can vary by market, so please contact DoctorOnCall Customer Service for the latest information on installment options for your order.
Is delivery free, and how much does shipping for Imdur 30mg Tablet cost?
Delivery charges may vary for our Malaysian and Singaporean customers depending on your delivery location and the applicable order terms at the time of purchase. For the most accurate and up-to-date delivery fee information, please contact DoctorOnCall Customer Service before placing your order.
How long does delivery take for Imdur 30mg Tablet?
Our Malaysian customers can generally expect delivery within 3-5 working days, while our Singaporean customers generally receive their orders within 5-7 working days. These are expected timeframes rather than guarantees, and actual delivery time may vary depending on your delivery location, order processing time, courier operations, and whether the order falls on a weekend or public holiday.
What is DoctorOnCall’s shipping, return, or cancellation policy for Imdur 30mg Tablet?
Shipping, return, and cancellation terms may vary for our Malaysian and Singaporean customers depending on the product and your order details. Please refer to DoctorOnCall’s Shipping & Delivery Policy and Return, Refund & Exchange Policy, or contact Customer Service, for the specific terms that apply to your order.
Ingredients / Active Ingredients
- Isosorbide mononitrate 30mg (extended-release)
Safety Advice
Pregnancy
This medicine should be used cautiously during pregnancy. Monitoring may be required.
Breastfeeding
Limited data on excretion in breast milk. Consult a doctor before use.
Kidney
Generally safe, but caution may be required in some patients.
Liver
Use cautiously. Liver function monitoring may be required.
Alcohol
It is not advisable to consume alcohol while taking this medicine.
Driving
Use caution while driving until you know how this medicine affects you.
Medical Review
