When Are Nitrates Contraindicated?

Nitrates should not be used in patients presenting with marked hypotension or bradycardia, or if there is suspicion of right ventricular infarction.

When should you not give nitroglycerin?

Nitroglycerin is contraindicated in patients that have reported allergic symptoms to the medication. [18] Known history of increased intracranial pressure, severe anemia, right-sided myocardial infarction, or hypersensitivity to nitroglycerin are contraindications to nitroglycerin therapy.

Who should not get nitrates?

You shouldn't take nitrates if you: Had severe allergic reactions to medicines with nitroglycerin or isosorbide. Take some erectile dysfunction drugs such as Cialis (tadalafil), Levitra (vardenafil), or Viagra (sildenafil). Have narrow-angle glaucoma.