Vascepa is a prescription drug used to treat high triglyceride levels in adults. According to the sources provided, there are some potential side effects associated with Vascepa, but serious side effects are rare.
The first source  provides a comprehensive list of potential side effects of Vascepa, including headache, joint pain, muscle pain, and stomach pain. These side effects are generally mild and may go away on their own.
The second source  explains that Vascepa has been studied extensively in clinical trials, and serious side effects were not found to be more common in people taking Vascepa compared to those taking a placebo. However, the website also notes that some people may experience an allergic reaction to Vascepa, which can cause symptoms such as hives, swelling, and difficulty breathing. Anyone experiencing these symptoms should seek medical attention immediately.
The third source  provides a list of potential side effects of Vascepa, including joint pain, swelling, and rash. The website also notes that people taking Vascepa may be at a higher risk of bleeding, especially if they are also taking other blood-thinning medications.
In summary, while there are some potential side effects associated with Vascepa, serious side effects are rare. Anyone experiencing symptoms such as hives, swelling, or difficulty breathing should seek medical attention immediately. It is also important to inform your doctor of any other medications you are taking to avoid any potential interactions.