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Active Ingredients:Isosorbide Dinitrate

Isordil Sublingual tablets are for the relief of an anginal attack.

Isordil Oral tablets are used to reduce the number of angina attacks, and should not be taken for relief of an anginal attack that has already started.

How to take Isordil

Isordil Sublingual tablets

At the first signs of an anginal attack, place one or two tablets under your tongue. If your angina is not relieved after taking these tablets you should call your doctor or nearest hospital immediately.

Isordil Oral tablets

The recommended dose for angina is 5 mg to 30 mg (½ to 3 tablets) taken four times a day, with a break of at least 8 hours between the evening dose and the next morning dose.

Your may doctor may recommend a different dose for you. Follow your doctor's instructions if they are different from these.

Swallow Isordil tablets with a glass of water

Do not chew or crush Isordil oral tablets.

Take this medicine exactly as directed by your doctor.

Elderly patients may need a lower dose.

If you forget to take Isordil

If you should be taking your next dose within 2 hours, skip the dose you missed and take your next dose when you are meant to.

Otherwise, take Isordil as soon as you remember, and then go back to take it as you would normally.

Do not try to make up for the dose that you missed by taking more than one dose at a time.If you are unsure about whether to take your next dose, speak to your doctor or pharmacist.

If you have trouble remembering when to take your medicine, ask your pharmacist for some hints.


Immediatelytelephone your doctor or Poisons Information Centre (13 11 26) for advice or go to Casualty of your nearest hospital if you think that you or anyone else may have taken too much Isordil, even if there are no signs of discomfort or poisoning. Keep the telephone number for these places handy whilst taking any medications.

If you take too many Isordil tablets, you may experience a headache, become flushed, experience cold sweats, nausea, vomiting, very low blood pressure and a fast heartbeat.

Things you must do

Visit your doctor regularly for a check up and always discuss with your doctor any problems you have with Isordil tablets.

Tell your doctor immediately if your angina attacks are getting worse or more frequent whilst using Isordil.

Take Isordil as your doctor has prescribed.

Keep enough Isordil to last weekends and holidays.If you do happen to run out, Isordil can be purchased from a pharmacy without a prescription.

Before having any type of surgery, tell your doctor or anaesthetist you are taking Isordil.

If a headache occurs after taking Isordil, pain relievers are recommended. The headache usually disappears on continual therapy with Isordil. If the headache persists, contact your doctor.

Things to be careful of

You may feel light-headed or dizzy or faint when you begin to take Isordil. This is because your blood pressure is falling suddenly.

Get up slowly when getting out of bed or standing up from a sitting positionif you feel lightheaded, dizzy or faint. If you drink alcohol, dizziness or faintness may be worse.

Standing up slowly, especially when you get up from bed or chairs, will help your body get used to the change in position and blood pressure. The problem usually goes away after the first few doses.

Be careful driving or operating machinery until you know how Isordil affects you.

Even though you may feel better when you start taking Isordil, be careful to avoid excessive physical activities.

Things you must not do

Do not chew or crush the tablets.

If you have been taking Isordil regularly for some time, do notsuddenly stop taking itas this may bring on an angina attack. Check with your doctor for the best way to slowly reduce the amount of Isordil you are taking before stopping completely.

Do not give this medicine to anyone else.

Do not take any other medicines unless you have discussed this with your doctor or pharmacist.

This includes medicines you can buy without a prescription from a pharmacy, supermarket or health food shop.

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