Glyceryl trinitrate works by releasing a chemical known as nitric oxide. Nitric oxide causes the veins and arteries to relax and widen so that the heart can work more easily. As a result the heart uses less energy, and therefore requires less oxygen.These effects are useful in the emergency treatment of severe heart failure that occurs after a heart attack, and in unstable angina which is unresponsive to other treatment. It is also used to control blood pressure and blood flow during heart surgery.
This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.
Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.
Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Because a side effect is stated here, it does not mean that all people using this medicine will experience that or any side effect.
The side effects listed above may not include all of the side effects reported by the drug's manufacturer.For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.
Sildenafil should not be used with glyceryl trinitrate as this combination causes a large decrease in blood pressure. When taken together with the following medicines the blood pressure lowering effects of glyceryl trinitrate are increased:
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