Omnipaque Flexipak

Name: Omnipaque Flexipak

For the Consumer

Applies to iohexol: solution

Along with its needed effects, iohexol (the active ingredient contained in Omnipaque Flexipak) 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 while taking iohexol:

More commonOral or rectal route
  • Swelling or pain
Less commonIntravascular route
  • Arm, back, or jaw pain
  • chest pain or discomfort
  • chest tightness or heaviness
  • difficulty breathing
  • dizziness
  • fainting
  • fast, slow, or irregular heartbeat
  • nausea
  • shortness of breath
  • sweating
  • swelling in the throat
Less commonOral or rectal route
  • Blurred vision
  • confusion
  • dizziness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • headache
  • nervousness
  • pounding in the ears
  • slow or fast heartbeat
  • sweating
  • unusual tiredness or weakness
RareIntrathecal route
  • Blurred vision
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • confusion
  • dizziness or lightheadedness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • feeling of constant movement of self or surroundings
  • headache
  • nervousness
  • pounding in the ears
  • seizures
  • slow or fast heartbeat
  • sweating
  • unusual tiredness or weakness
RareIntravascular route
  • Blurred vision
  • confusion
  • dilated neck veins
  • dizziness or lightheadedness
  • dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
  • extreme fatigue
  • fast, pounding, or irregular heartbeat or pulse
  • feeling cold
  • feeling of constant movement of self or surroundings
  • fever
  • irregular breathing
  • pale skin
  • seizures
  • sensation of spinning
  • swelling of the face, fingers, feet, or lower legs
  • troubled breathing with exertion
  • unusual bleeding or bruising
  • unusual tiredness or weakness
  • weight gain
RareOral or rectal route
  • Muscle weakness

Some side effects of iohexol 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:

More commonIntrathecal route
  • Nausea
  • pain in the neck, back, or nerve
More commonOral or rectal route
  • Abdominal or stomach pain
  • bloated or full feeling
  • diarrhea
  • excess air or gas in the stomach or intestines
  • nausea
  • passing gas
  • vomiting
Less commonIntrathecal route
  • Vomiting
Less commonIntravascular route
  • Bad, unusual, or unpleasant (after) taste
  • change in taste
  • headache
Less commonOral or rectal route
  • Hives or welts, itching, or skin rash
  • redness of the skin
  • sleepiness or unusual drowsiness
RareIntrathecal route
  • Change in color vision
  • continuing ringing or buzzing or other unexplained noise in the ears
  • difficulty seeing at night
  • drowsiness
  • hearing loss
  • increased sensitivity of the eyes to sunlight
  • loss of appetite
  • sensation of spinning
RareIntravascular route
  • Acid or sour stomach
  • anxiety
  • belching
  • chills
  • cold sweats
  • coma
  • cool, pale skin
  • cough
  • depression
  • diarrhea
  • dry mouth
  • heartburn
  • hives or welts, itching, or rash
  • increased hunger
  • indigestion
  • nightmares
  • redness of the skin
  • runny nose
  • shakiness
  • sleepiness or unusual drowsiness
  • slurred speech
  • sneezing
  • stomach discomfort, upset, or pain
  • stuffy nose
  • uncontrolled eye movements
  • vomiting

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