Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, fever, and inflammation. According to the FDA drug facts label [2], ibuprofen is contraindicated in patients who have a known allergy to ibuprofen or any other NSAID. Allergic reactions to ibuprofen are rare, but they can be severe and life-threatening. Symptoms of an ibuprofen allergy can range from mild to severe and may include hives, itching, rash, swelling of the face, tongue, or throat, difficulty breathing, and anaphylaxis [3]. If you experience any of these symptoms after taking ibuprofen, seek medical attention immediately.

It is important to note that having an allergy to ibuprofen does not necessarily mean that you are allergic to all NSAIDs. However, if you have had an allergic reaction to one NSAID, you may be at an increased risk of having a reaction to other NSAIDs [3]. If you have a history of allergies, it is recommended that you consult with your healthcare provider before taking any medication, including Advil or ibuprofen [2].

Sources:
[2] FDA Drug Facts Label: Ibuprofen. https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/ibuprofen-drug-facts-label
[3] News Medical. Ibuprofen Allergy: Symptoms, Diagnosis, Treatment. https://www.news-medical.net/health/Ibuprofen-Allergy-Symptoms-Diagnosis-Treatment.aspx