Vascepa is a prescription medication used to reduce triglyceride levels in adults with severe hypertriglyceridemia. While Vascepa is generally well-tolerated, it may cause some side effects. According to the official Vascepa website [3], the most common side effects of Vascepa include joint pain, swelling, and redness. Other side effects may include headache, muscle and stomach pain, nausea, diarrhea, and back pain. In rare cases, Vascepa may cause an allergic reaction, which can include hives, swelling of the face, lips, tongue, or throat, and difficulty breathing. If you experience any of these symptoms, you should seek immediate medical attention.

It is important to note that not everyone who takes Vascepa will experience side effects, and some people may experience different side effects than those listed above. Additionally, some people may experience more severe side effects than others. If you are taking Vascepa and experience any unusual symptoms or side effects, you should speak with your doctor right away.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://www.everydayhealth.com/drugs/vascepa
[3] https://www.vascepa.com/about-vascepa/safety-and-side-effects/