Cosentyx is a medication used to treat various inflammatory conditions such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. While it is generally considered safe, there is a possibility of allergic reactions.

According to the Cosentyx website [2], some of the common side effects of Cosentyx include infections, diarrhea, and upper respiratory tract infections. However, it also states that some people may experience allergic reactions, which can include hives, difficulty breathing, and swelling of the face, lips, tongue, or throat. If any of these symptoms occur, it is recommended to seek medical attention immediately.

Additionally, the Drug Patent Watch website [1] states that the active ingredient in Cosentyx, secukinumab, has been associated with allergic reactions in clinical trials. The website also notes that allergic reactions can occur with any medication, and it is important to monitor for symptoms and seek medical attention if they occur.

Finally, Medical News Today [3] reports that while allergic reactions to Cosentyx are rare, they can occur. The article recommends that people with a history of allergic reactions to any medication or substance should inform their doctor before taking Cosentyx.

In conclusion, while allergic reactions to Cosentyx are rare, they can occur. Symptoms can include hives, difficulty breathing, and swelling of the face, lips, tongue, or throat. If any of these symptoms occur, it is recommended to seek medical attention immediately. People with a history of allergic reactions to any medication or substance should inform their doctor before taking Cosentyx.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/safety-and-side-effects
[3] https://www.medicalnewstoday.com/articles/drugs-cosentyx-side-effects