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Nitroglycerin

Important Information for Your Healthcare Provider

Talk with your healthcare provider prior to using nitroglycerin if you have:
 
  • Low blood pressure (hypotension)
  • Dehydration
  • Anemia
  • Increased intracranial pressure
  • Any allergies, including to foods, dyes, or preservatives.
 
Also, let your healthcare provider know if you are:
 
 
Make sure to tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.
 
(Click Nitroglycerin Precautions and Warnings to learn more, including information on who should not use the drug.)
 

How Does It Work?

Nitroglycerin works by relaxing the veins and arteries in the body. With the arteries and veins relaxed, the heart does not need to work so hard and does not require as much oxygen. Because angina is usually caused when there is not enough oxygen to meet the heart's needs, nitroglycerin can help relieve angina attacks.
 
Relaxing the blood vessels also leads to a decrease in blood pressure, which may or may not be desired, depending on the particular circumstances.
 
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Nitroglycerin Drug Information

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