Glyceryl trinitrate 400mcg spray is a sublingual spray that delivers glyceryl trinitrate directly through the lining of the mouth for rapid absorption. It works by relaxing and widening blood vessels, improving blood flow to the heart and reducing its workload, providing quick relief from angina symptoms.
The spray may also be used before physical activity or emotional stress likely to trigger an angina attack, as advised by a healthcare professional.
Uses
- Acute relief of angina pectoris
- Prevention of angina before exertion or stress
Active Ingredients
- Glyceryl trinitrate 400 micrograms per metered spray
How to Take
- Spray one or two doses under the tongue at the onset of chest pain or as directed by your healthcare provider.
- Do not inhale the spray.
- Allow the medication to absorb without immediately swallowing.
Precautions
- Prescription-only medicine.
- May cause headache, dizziness, or low blood pressure.
- Do not use with phosphodiesterase-5 (PDE-5) inhibitors such as sildenafil, tadalafil, or vardenafil due to the risk of severe hypotension.
- Seek immediate emergency medical attention if chest pain persists after the recommended doses or worsens.


