Vascepa (icosapent ethyl) is a prescription medication used to lower triglyceride levels in adults with high levels of triglycerides. According to the sources provided, some of the common side effects of Vascepa include joint pain, muscle pain, and swelling in the hands or feet. Additionally, the medication may cause nausea, upset stomach, and diarrhea. Other possible side effects of Vascepa may include headache, back pain, and a rash.

It is important to note that not all people who take Vascepa will experience these side effects. Some people may experience no side effects at all, while others may experience more severe side effects. Patients should speak with their doctor if they experience any side effects while taking Vascepa.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://www.everydayhealth.com/drugs/vascepa
[3] https://www.rxlist.com/vascepa-drug.htm