Cosentyx is a medication used to treat various autoimmune diseases such as psoriasis, psoriatic arthritis, and ankylosing spondylitis [2]. It is a type of drug called a biologic, which works by targeting specific proteins in the immune system to reduce inflammation [2].

According to the sources provided, there is no direct information that suggests alcohol worsens Cosentyx side effects [1][2][3]. However, it is essential to note that alcohol can have adverse effects on the body and may exacerbate some of the side effects of Cosentyx [1][2][3].

Some of the common side effects of Cosentyx include infections, diarrhea, and nausea [2]. Alcohol can weaken the immune system, making the body more susceptible to infections [1]. Therefore, drinking alcohol while taking Cosentyx may increase the risk of developing infections [1][2][3].

Moreover, alcohol can irritate the stomach lining, leading to gastrointestinal problems such as diarrhea and nausea [1][2][3]. These side effects are already associated with Cosentyx, and drinking alcohol may worsen them [1][2][3].

In conclusion, there is no direct evidence that alcohol worsens Cosentyx side effects. However, it is crucial to be cautious when drinking alcohol while taking Cosentyx, as it can weaken the immune system and irritate the stomach lining, potentially exacerbating some of the medication's side effects. Patients should consult their healthcare provider before consuming alcohol while taking Cosentyx [1][2][3].

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