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Omega 3 Acid Ethyl Esters

Omega-3-Acid Ethyl Esters Side Effects

Robert Chad Hakim, PharmD, BCCCPDaisy Chau, PharmD
Reviewed by Robert Chad Hakim, PharmD, BCCCP, Daisy Chau, PharmD
Last reviewed on October 20, 2026

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

  • Burping (4%)
  • Changes in taste (4%)
  • Indigestion (3%)

Less Common Side Effects

  • Constipation
  • Stomach problems
  • Vomiting
  • Itching
  • Rash

Omega-3-Acid Ethyl Esters serious side effects

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

  • Heart rhythm problems: chest pain, dizziness, weakness, shortness of breath, fainting, fast or irregular heartbeat
  • Allergic reaction: itchy, red rash (hives), shortness of breath, chest tightness, swelling of lips, tongue, face, or eyes

Source: DailyMed

The following Omega-3-Acid Ethyl Esters side effects have also been reported

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

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

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