Cosentyx is a biologic medication used to treat various autoimmune conditions, including psoriasis and psoriatic arthritis. While the drug has been shown to be effective in treating these conditions, there are concerns about the potential for long-term side effects.

According to Drug Patent Watch [1], there have been no reported long-term side effects associated with Cosentyx. However, the drug has only been on the market since 2015, so there is limited data available on its long-term effects.

That being said, there are some potential side effects that have been reported in patients taking Cosentyx. These can include infections, such as upper respiratory infections and urinary tract infections, as well as allergic reactions and injection site reactions [2]. Additionally, some patients may experience gastrointestinal symptoms, such as diarrhea and nausea, or develop liver problems [3].

It's important to note that the risk of side effects can vary depending on the individual patient and their medical history. Patients should discuss any concerns they have about potential side effects with their healthcare provider before starting treatment with Cosentyx.

In conclusion, while there is currently no evidence of long-term side effects associated with Cosentyx, there are potential side effects that patients should be aware of. As with any medication, patients should weigh the potential benefits against the potential risks before starting treatment.

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