Nitroglycerin (Intravenous Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

• Bluish-colored lips, fingernails, or palms
• Dark urine
• Difficulty with breathing
• Dizziness or lightheadedness
• Fever
• Headache
• Pale skin
• Rapid heart rate
• Shortness of breath
• Sore throat
• Unusual bleeding or bruising
• Unusual tiredness or weakness

• Arm, back, or jaw pain
• Blurred vision
• Chest pain or discomfort
• Chest tightness or heaviness
• Confusion
• Dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
• Fainting
• Fast or irregular heartbeat
• Sweating

Get emergency help immediately if any of the following symptoms of overdose occur:

• Blurred or loss of vision
• Bulging soft spot on the head of an infant
• Change in consciousness
• Change in the ability to see colors, especially blue or yellow
• Cold, clammy skin
• Convulsions
• Disturbed color perception
• Double vision
• Feeling of constant movement of self or surroundings
• Flushed skin
• Halos around lights
• Headache, severe and throbbing
• Increased sweating
• Loss of appetite
• Loss of consciousness
• Nausea or vomiting
• Night blindness
• Overbright appearance of lights
• Paralysis
• Sensation of spinning
• Slow or irregular heartbeat
• Tunnel vision
• Wheezing

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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