Cosentyx (secukinumab) is a prescription medication used to treat certain autoimmune diseases such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. Like any medication, Cosentyx can cause side effects, and it is essential to understand them before taking the medication.

The most common side effects of Cosentyx include upper respiratory tract infections, diarrhea, and reactions at the injection site such as redness, itching, and pain. Other common side effects include nausea, back pain, and headache. These side effects are usually mild to moderate and tend to go away on their own without any medical intervention [2].

In rare cases, Cosentyx can cause serious side effects such as allergic reactions, infections, and malignancies. Therefore, it is crucial to seek medical attention immediately if you experience any severe side effects such as difficulty breathing, swelling of the face, lips, tongue, or throat, fever, chills, or persistent cough [2].

It is important to note that this is not a complete list of side effects, and other side effects may occur. Therefore, it is essential to talk to your healthcare provider before taking Cosentyx to understand the potential risks and benefits of the medication.

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