Vascepa is a prescription medication used to treat high levels of triglycerides in the blood. Allergic reactions to Vascepa are rare, but they can occur. The common symptoms of Vascepa allergy include rash, itching, hives, difficulty breathing, swelling of the face, lips, tongue, or throat, and chest tightness [2][3]. If you experience any of these symptoms, you should seek immediate medical attention. In severe cases, Vascepa allergy can cause anaphylaxis, which is a life-threatening allergic reaction [2]. If you have a history of allergies or allergic reactions to any medication, it is important to inform your doctor before taking Vascepa [1]. It is also important to follow your doctor's instructions carefully and to report any side effects or symptoms that you experience while taking Vascepa [2][3].

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