Gyne Lotrimin

Nitroglycerin Medication - Uses & Side Effects

Nitroglycerin is used to prevent and treat angina pectoris such as suffocating chest pain. This condition may occurs when the coronary arteries become constricted and are not able to carry sufficient oxygen to the heart muscle. It works by improve oxygen flow by relaxing the walls of arteries and veins.

Nitroglycerin Dosage

  • For the treatment of chest pain, the usual starting dose is 1 tablet daily. If your pain continues after you have taken 3 tablets in a 15-minute period, then you should notify your doctor.
  • If you are using Patch, then you should applied patch to the skin for 12 to 14 hours.

Uses of Nitroglycerin

  • Nitroglycerin is used to prevent and treat angina pectoris.
  • It may also be used to treats other medical conditions those are listed in this medication guide.

Side Effects of Nitroglycerin

Before taken Nitroglycerin medicine, you should discuss the side effects with your doctor. If any develop or change in intensity, then you should inform your doctor as soon as possible. Because only your doctor can determine if it is safe for you to continue taking Nitroglycerin. Side effects may include:

  • Dizziness
  • Flushed skin
  • Headache
  • Light-headedness
  • Worsened angina pain

Warnings and precautions before taking Nitroglycerin:

  • If your vision becomes blurry or your mouth becomes dry while you are taking nitroglycerin, then you should stop taking Nitroglycerin. You should contact your doctor immediately if these symptoms develop.
  • Before taking nitroglycerin, you should tell your doctor if you have had a recent heart attack, or stroke; or if you have anemia, glaucoma, liver, or thyroid disease.
  • After taken this medicine, then you may feel dizzy, or drowsiness. So you should not participate in any activities that require alertness such as driving and operate machinery.

Drug Interaction :-

If you are taking Nitroglycerin with certain other drugs, then the effects of either could be increased, decreased, or altered. So it is especially important to check with your doctor before combining Nitroglycerin with other drugs. Taken with many high blood pressure drugs, nitroglycerin may cause extreme low blood pressure. So you should take particular care with calcium channel blockers such as Calan and Procardia XL.


After taken Nitroglycerin if you feel that overdose is suspected, then you should contact with your doctor immediately. Because it may lead to another serious effect. Symptoms of a Nitroglycerin overdose include:

  • Bluish skin
  • Clammy skin
  • Diarrhea
  • Fainting
  • Irregular pulse
  • Nausea
  • Palpitations

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