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Omegaven

Omegaven Side Effects

Robert Chad Hakim, PharmD, BCCCPCydnee Ng, PharmD
Reviewed by Robert Chad Hakim, PharmD, BCCCP, Cydnee Ng, PharmD
Last reviewed on March 18, 2025

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

  • Vomiting (46%)
  • Irritated or restless behavior (35%)
  • Low heart rate (35%)
  • Episodes of pauses in breathing (apnea; 20%)
  • Viral infection (16%)
  • Skin redness (12%)

Less Common Side Effects

  • Rash
  • Swollen area of pus
  • Redness at injection site
  • Stiff muscles

Omegaven serious side effects

Contact your healthcare provider immediately if you experience any of the following.

  • Serious allergic reaction: hives, itching, flushing, breathing very fast, trouble breathing, fast heart rate, skin turning blue, fever, confusion, swelling of face or throat
  • Serious infection: fever, trouble breathing, cough, diarrhea, stomach pain, weakness, sweating, chills

Source: DailyMed

The following Omegaven side effects have also been reported

Side effects that you should report to your care team as soon as possible:

  • Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
  • Infection—fever, chills, cough, sore throat, wounds that don't heal, pain or trouble when passing urine, general feeling of discomfort or being unwell
  • Liver injury—right upper belly pain, loss of appetite, nausea, light-colored stool, dark yellow or brown urine, yellowing skin or eyes, unusual weakness or fatigue
  • Shortness of breath

Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):

  • Dizziness
  • Flushing, mostly over the face, neck, and chest, during infusion
  • Headache
  • Nausea
  • Pain, redness, or irritation at injection site
  • Sweating
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