Cosentyx is a prescription drug used to treat certain autoimmune diseases such as plaque psoriasis, psoriatic arthritis, and ankylosing spondylitis. According to the sources provided, there are some potential side effects of Cosentyx that patients should be aware of.

The first source, Drug Patent Watch [1], provides a comprehensive list of the potential side effects of Cosentyx, including the most common ones such as upper respiratory tract infections, diarrhea, and headache. However, the website notes that serious side effects are rare and that patients should consult their doctor if they experience any unusual symptoms.

The second source, the official Cosentyx website [2], also provides information about the potential side effects of the drug. The website notes that some patients may experience allergic reactions, including hives, swelling, and difficulty breathing. It also lists other potential side effects such as infections, liver problems, and worsening of inflammatory bowel disease. The website advises patients to contact their doctor if they experience any of these symptoms.

The third source, Healthline [3], provides a more detailed list of potential side effects, including rare but serious ones such as tuberculosis, fungal infections, and nervous system problems. The website also notes that Cosentyx may increase the risk of certain types of cancer, although this risk is considered low.

In conclusion, while Cosentyx is generally considered safe and effective for treating autoimmune diseases, there are some potential side effects that patients should be aware of. Patients should consult their doctor if they experience any unusual symptoms while taking the drug.

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