What is Nitroglycerin? Full information, usage, benefits and side effects

What is Nitroglycerin? Full information, usage, benefits and side effects


Nitroglycerin belongs to a class of drugs called vasodilators. Nitroglycerin ointment prevents angina by dilating blood vessels so that the heart doesn't have to work as hard and therefore doesn't need as much oxygen. Nitroglycerin ointment treats the pain of anal fissures by dilating blood vessels, which relieves pressure on the anal tissues.


Rectal nitroglycerin is used to treat moderate to severe pain caused by a chronic anal fissure (a tear in the skin lining the rectum).

Rectal nitroglycerin may also be used for purposes not listed in this medication guide.


Follow all directions on your medication label and read any medication instructions or leaflets. Use the medicine exactly as directed.

Do not use rectal suppositories or enema by mouth. Use it only in your rectum.

Nitroglycerin rectal can cause severe headaches. Ask your doctor before using any headache medicine.

Side Effects:

Some common side effects are:

  • sleepiness
  • dizzy
  • Redness or irritation of ointment-covered skin
  • rinse

Some side effects can be serious:

  • slow heartbeat
  • worsening chest pain
  • syncope
  • rash
  • hives
  • itch
  • difficulty breathing or swallowing


Please consult your doctor/physician/specialist before taking any healthcare products. In case of allergic reaction to the medicines/substance, please take immediate medical help.

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