Nitroglycerin Ointment Side Effects

While most people do not experience problems while using nitroglycerin ointment, side effects can still occur. Some of these possible reactions include dizziness, lightheadedness, and headaches. In most cases, side effects are minor; however, contact your healthcare provider immediately if you develop serious problems, such as difficulty breathing, fainting, or a bluish discoloration of the skin.

An Introduction to Side Effects of Nitroglycerin Ointment

Just like any medicine, nitroglycerin ointment (Nitro-Bid®) can cause side effects. However, not everyone who uses the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
(This article covers many, but not all, of the possible side effects with nitroglycerin ointment. Your healthcare provider can discuss a more complete list with you.)
This article refers to the nitroglycerin skin ointment that is used to treat chest pain, not the nitroglycerin ointment that is used to treat anal fissures (see Nitroglycerin Anal Ointment for more information about this medication).

Nitroglycerin Ointment Side Effects to Report

Some side effects of nitroglycerin ointment are potentially serious and should be reported immediately to your healthcare provider. These include but are not limited to:
  • Fainting
  • Worsening angina
  • High blood pressure (hypertension)
  • A bluish discoloration of the skin, which is a sign of methemoglobinemia, a potentially serious problem
  • Signs of an allergic reaction, such as:
    • Hives
    • Itching
    • Unexplained swelling of the mouth or throat
    • Wheezing
    • Difficulty breathing or swallowing.
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Nitroglycerin Ointment Information

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