Advil is a brand name for the generic drug ibuprofen, which belongs to a class of medications called nonsteroidal anti-inflammatory drugs (NSAIDs). While Advil is generally well-tolerated, there is a possibility of allergic reactions in some individuals.

According to the Drug Patent Watch website, the active ingredient in Advil, ibuprofen, has been on the market since 1974 and is available in various forms, including tablets, capsules, and liquid suspensions [1]. The U.S. Food and Drug Administration (FDA) provides drug facts labels for ibuprofen products, which include information about potential allergic reactions [2].

Allergic reactions to ibuprofen can manifest in different ways. News-Medical reports that symptoms may include skin rash, hives, itching, facial swelling, and even anaphylaxis, a severe and potentially life-threatening allergic reaction [3]. Anaphylaxis symptoms can include difficulty breathing, rapid heartbeat, low blood pressure, and loss of consciousness.

If you suspect you are experiencing an allergic reaction to Advil or any other medication containing ibuprofen, it is crucial to seek medical attention immediately. A healthcare professional can evaluate your symptoms, provide a proper diagnosis, and recommend appropriate treatment options.

In summary, while Advil (ibuprofen) is generally well-tolerated, there is a possibility of allergic reactions in some individuals. These reactions can range from mild symptoms such as skin rash and itching to severe reactions like anaphylaxis. If you suspect an allergic reaction, it is important to seek medical help promptly.

Sources:
[1] Drug Patent Watch: Advil - https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] FDA: Ibuprofen Drug Facts Label - 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