Cosentyx is a medication used to treat certain autoimmune diseases such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. Although it is an effective drug, it may cause some complications.

According to Drug Patent Watch [1], some of the reported side effects of Cosentyx include upper respiratory tract infections, diarrhea, and inflammation of the nose and throat. In rare cases, serious infections such as tuberculosis and sepsis have been reported.

The official website of Cosentyx [2] also lists some of the side effects of the drug, including allergic reactions, infections, and gastrointestinal problems. The site also notes that Cosentyx may increase the risk of certain cancers, such as lymphoma and non-melanoma skin cancer.

Medical News Today [3] reports that Cosentyx may also cause liver problems, such as hepatitis and liver failure. The site also notes that the drug may increase the risk of depression and suicidal thoughts.

It is important to note that not all patients will experience these side effects, and some may experience no side effects at all. Patients who experience any side effects while taking Cosentyx should contact their healthcare provider immediately.

In conclusion, Cosentyx may cause some complications such as upper respiratory tract infections, diarrhea, inflammation of the nose and throat, serious infections, allergic reactions, gastrointestinal problems, liver problems, depression, and an increased risk of certain cancers. Patients should be aware of these potential side effects and contact their healthcare provider if they experience any symptoms.

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