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Glyceryl Trinitrate - Sublingual - Patient Medicine Information

> Why do I need this medicine?
> How do I take this medicine?
> When should I not use this medicine?
> What should I take note of while taking this medicine?
> What side effects could I experience?
> Can I take this with other medicines?
> What special dietary instructions should I follow?
> How should I store this medicine?

 
Available Brands

Other Known Brands
  • Nitroglyce    

Why do I need this medicine?

Glyceryl Trinitrate (GTN) belongs to a group of medicines known as nitrates. GTN tablets are used to relieve sudden attacks of angina (chest pain). This medicine also helps prevent chest pain before you engage in activities that can trigger chest pain.

GTN tablets cannot cure your chest pain; they can only temporarily relieve your discomfort. If your doctor has given you other heart medicines, make sure you take them as directed.

How do I take this medicine?

Take GTN tablets exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

For the relief of sudden chest pains:

Take your GTN tablets only if you have chest pain.

At the first sign of chest pain, place 1 tablet under your tongue and allow it to dissolve. If your chest is still painful, repeat the dose every 3 to 5 minutes. If your chest pain is not relieved after taking a total of 3 tablets, call for an ambulance immediately.

For the prevention of chest pain before engaging in an activity:

Place 1 tablet under your tongue and allow it to dissolve 5 to 10 minutes before the activity.

Do not swallow, chew or crush the tablet; it must be placed under your tongue to be effective. GTN is absorbed into your body through the lining of your mouth.

Always carry your GTN tablets with you even if you feel well, in case you experience a sudden attack of chest pain. Do not stop this medicine unless your doctor has told you to do so.

When should I not use this medicine?

It is very important that you DO NOT take GTN with medicines used to treat impotence and/or pulmonary arterial hypertension (high blood pressure in the blood vessels leading to the lungs), such as sildenafil (e.g. Viagra®), tadalafil (e.g. Cialis®) and vardenafil (e.g. Levitra®).

Alert your doctor if you have the following conditions:

- history of heart problems e.g. pericarditis (inflammation of the heart), valve stenosis (narrowing of the heart valves)
- increased pressure in the skull due to bleeding in the brain or head injury
- severe anaemia (low red blood cell count)
as GTN may not be suitable for you.

What should I take note of while taking this medicine?

Inform your doctor if you have the following:

- liver disease
- kidney disease
- low blood pressure
- a recent heart attack
- glaucoma (increased eye pressure)

Let your doctor know if you are pregnant or breastfeeding.

Make sure you see your doctor regularly for follow-ups. Let your doctor know if your chest pain seems worse or if the GTN tablets do not seem to help as much as before.

What side effects could I experience?

If you are taking GTN tablets for the first time, you may get a headache, your face may feel flushed and your heart rate may go up. This indicates that the medicine is working and is not a cause for worry. The symptoms should pass. If you experience a bad headache, you may remove the tablet before it is completely dissolved once your chest pain is relieved.

You may also feel dizzy and a little faint. Hence, it is preferable to sit down while taking GTN tablets. It will help if you get up slowly from a sitting or lying down position. Seek help from family or bystanders if you do not feel well. If this medicine makes you dizzy or drowsy, do not drive or take part in any activity in which you need to be alert.

You may feel a temporary tingling sensation in the tongue or in the mouth.

Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.

Can I take this with other medicines?

DO NOT take GTN with medicines used to treat impotence and/or pulmonary arterial hypertension (high blood pressure in the blood vessels leading to the lungs), such as sildenafil (e.g. Viagra®), tadalafil (e.g. Cialis®) and vardenafil (e.g. Levitra®).

Inform your doctor and pharmacist if you are taking any of these medicines:

- medicines that can lower blood pressure e.g. enalapril
- medicines to treat depression e.g. amitriptyline
- apomorphine (medicine for Parkinson's disease)
- dihydroergotamine (medicine for migraine)

This list does not include all medicines that may interact with GTN.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicine, supplements and medicines that you buy without a prescription.

What special dietary instructions should I follow?

Avoid alcohol.

How should I store this medicine?

Store in a cool, dry place away from the reach of children.

GTN tablets are very sensitive to heat and moisture. When you carry them around with you, do not keep them too near your body as your body heat may cause the medicine to become ineffective. It is better to put them in your bag. Do not stuff cotton wool or tissue paper into the bottle. Do not store GTN tablets in the toilet or bathroom.

Keep your GTN tablets in the original bottle and do not transfer to any other container. Keep the bottle tightly closed. Discard 8 weeks after opening, whether or not you have finished the tablets in the bottle. Write the opening date on the bottle so that you can easily keep track of the time.

This information is independently developed by MIMS based on Glyceryl Trinitrate - Sublingual and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2019 MIMS. All rights reserved. Powered by MIMS.com

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