Cosentyx is a prescription medication used to treat various inflammatory conditions such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. As with any medication, Cosentyx may cause side effects. According to the drug's official website [2], the most common side effects of Cosentyx include cold symptoms such as a runny or stuffy nose, sore throat, and cough. Other common side effects include diarrhea, upper respiratory tract infections, and headache. These side effects are usually mild and go away on their own without treatment.

However, there are also some more serious side effects that may occur with Cosentyx. These include infections, such as tuberculosis, and allergic reactions, such as hives, difficulty breathing, and swelling of the face, lips, tongue, or throat. Patients taking Cosentyx should seek immediate medical attention if they experience any of these symptoms [2].

Additionally, Cosentyx may increase the risk of developing certain types of cancer, such as lymphoma. Patients should discuss the potential risks and benefits of Cosentyx with their healthcare provider before starting treatment [3].

It is important to note that not all patients will experience side effects while taking Cosentyx. However, patients should always discuss any concerns or questions about potential side effects with their healthcare provider.

Sources:
[2] https://www.cosentyx.com/safety-and-side-effects
[3] https://www.drugs.com/cosentyx.html