GTN spray is used to relieve angina. Angina is chest pain which may spread to your throat, jaw, neck, shoulders or arms. Angina happens when the blood supply to the muscles of your heart are restricted, due to narrowing of the blood vessels supplying your heart.
GTN spray works by widening blood vessels, letting more blood and oxygen reach your heart. This reduces strain on your heart, making it easier for your heart to pump blood. Read more about angina.
GTN spray is sprayed under your tongue so that it starts having an effect immediately. In this way, it provides rapid relief from angina symptoms. It can also be used for when angina pain is expected to happen, such as before exercise that is likely to cause chest pain (eg, before climbing stairs).
In Aotearoa New Zealand, GTN spray is available on prescription from your doctor. You can also buy GTN spray from your pharmacy without a prescription, after consultation with your pharmacist.