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General Information

Nitroglycerin is used to prevent chest pain or called angina. It occurs in people with a certain heart condition called coronary artery disease. Angina occurs when the heart muscle is not getting enough blood. It feels like a pressing or squeezing pain. Coronary artery disease is the narrowing or blockage of the coronary arteries.

How does Nitroglycerin work?

Nitroglycerin works by relaxing the smooth muscle and blood vessels in your body. This increases the amount of blood and oxygen that reaches your heart. In turn, your heart does not work as hard. This decreases the pain in your chest.

Why use Nitroglycerin?

Nitroglycerin is in the class of medications called vasodilators. It relaxes and widens blood vessels so blood can flow more easily to the heart. This medication is supplied as sublingual tablets for oral use. It is a stabilized sublingual compressed nitroglycerin tablet that contains 0.3 mg, 0.4 mg, and 0.6 mg. Nitroglycerin is an organic nitrate. The U.S. Food and Drug Administration (FDA) has already approved this medication.

How to use Nitroglycerin?

The recommended dosage for this medication is based on your condition, age, and response to it. You should not take more or less of it or take it more often than the prescription of your doctor. You must take it exactly as it is given.

Nitroglycerin is to be taken by mouth as directed by your doctor. It is usually taken 3 to 4 times a day. Do not change the dosage unless it is prescribed. Don’t forget to take each dose at the same time every day. Swallow the tablet as a whole with a full glass of water. Do not break or chew it. Let your doctor know if your condition does not improve or if it gets worse.

What are the side effects of Nitroglycerin?

  • Weakness
  • Headache
  • Light-headedness
  • Dizziness
  • Nausea
  • Flushing as your body adjusts to this drug
  • Fast or irregular heartbeat
  • Mild burning or tingling with the tablet in your mouth

Warnings and Precautions

  • Do not suddenly stop taking this medication without the consent of your doctor.
  • Tell your doctor if you are allergic to it. Tell as well if you have any medical history, current medications, or allergies.
  • This drug may make you dizzy. Avoid driving or do anything that needs alertness.
  • Consult your doctor first if you are pregnant or breastfeeding women.
  • Keep this drug at room temperature far from heat and moisture.