Drugs Home > Nitroglycerin Tablet Side Effects

Common Side Effects

For many medications, the prescribing information carefully explains the exact percentage of side effects that were reported in clinical trials. However, the prescribing information for almost all older medications, including many nitroglycerin products, includes only vague information on potential side effects, with no percentages provided. Therefore, it can be difficult to know exactly how frequently the side effects occur.
With most nitroglycerin products, including nitroglycerin tablets, the most notable side effect is headaches. These headaches can be quite severe and can happen every time a person uses nitroglycerin tablets.
Low blood pressure (hypotension) is also a fairly common reaction and can cause side effects such as:
  • Lightheadedness
  • Dizziness
  • A spinning sensation (vertigo)
  • Heart palpitations
  • Weakness
  • Fainting.
Other possible side effects of nitroglycerin tablets may include:
  • Flushing of the skin
  • Nausea
  • Vomiting
  • Sweating.

Final Thoughts

You may experience some or none of the side effects listed in this article. Unfortunately, there is no way for your healthcare provider to know beforehand if you will have problems with a medicine that you have never tried.
Therefore, make sure to let your healthcare provider know if you develop any side effects while using nitroglycerin tablets or if something "just does not seem right." While it may not be related to the medication, your healthcare provider will be able to diagnose and treat the problem.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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