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.