Nitroglycerin (Rectal 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 immediately if any of the following side effects occur:

• Bluish-colored lips, fingernails, or palms
• Dark urine
• Difficulty with breathing
• Difficulty with swallowing
• Fast heartbeat
• Feeling of warmth
• Fever
• Hives
• Itching
• Pale skin
• Puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
• Redness of the face, neck, arms, and occasionally, upper chest
• Shortness of breath
• Skin rash
• Tightness in the chest
• Unusual bleeding or bruising
• Unusual tiredness or weakness
• Wheezing

• Blurred vision
• Confusion
• Dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• Sweating

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Dizziness or lightheadedness
• Headache

• Cracks in the skin
• Loss of heat from the body
• Red, swollen skin
• Scaly skin

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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