Cosentyx (secukinumab) is a prescription medication used to treat various autoimmune diseases such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. While it is an effective medication, like all medications, it may cause side effects.

According to the official Cosentyx website [2], the most common side effects of the medication include cold symptoms, diarrhea, and upper respiratory infections. Additionally, patients may experience injection site reactions, such as redness, swelling, or itching. These side effects are usually mild and go away on their own.

However, some patients may experience more severe side effects. These can include serious infections, such as tuberculosis or fungal infections, or allergic reactions. Patients should seek medical attention immediately if they experience symptoms such as fever, chills, cough, shortness of breath, or rash.

It is also important to note that Cosentyx can affect the immune system, which can increase the risk of infections. Patients should inform their healthcare provider if they have a history of infections or if they are currently taking medications that suppress the immune system.

According to DrugPatentWatch [1], clinical trials of Cosentyx have reported side effects such as headache, fatigue, and nausea. Additionally, some patients may experience gastrointestinal issues, such as vomiting or abdominal pain.

In conclusion, while Cosentyx is an effective medication for treating autoimmune diseases, it may cause side effects. Patients should inform their healthcare provider of any symptoms they experience while taking the medication and seek medical attention immediately if they experience severe side effects.

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