Cosentyx is a prescription medicine used to treat adults with psoriasis, psoriatic arthritis, and ankylosing spondylitis. It is a biologic drug that works by blocking the action of certain proteins in the body that contribute to inflammation.

According to the official website of Cosentyx [2], it may take several weeks or months to see significant improvement in psoriasis, psoriatic arthritis, and ankylosing spondylitis symptoms. In clinical studies, some patients saw improvement as early as 1-2 weeks, while others took up to 12 weeks to see significant improvement. However, individual results may vary, and it is essential to follow the recommended dosing and treatment schedule prescribed by your doctor.

Drugpatentwatch [1] indicates that Cosentyx's initial patent was filed on September 23, 2010, and it was approved by the FDA on January 21, 2015. The patent for Cosentyx will expire on October 23, 2030.

Drugs.com [3] explains that Cosentyx is administered by injection under the skin, and the dosage and frequency depend on the condition being treated. The website also advises that patients should not stop taking Cosentyx without consulting their doctor, as this may cause their symptoms to return or worsen.

In conclusion, Cosentyx is a biologic drug that can take several weeks or months to see significant improvement in psoriasis, psoriatic arthritis, and ankylosing spondylitis symptoms. Individual results may vary, and it is crucial to follow the recommended dosing and treatment schedule prescribed by your doctor. Patients should not stop taking Cosentyx without consulting their doctor, and the drug's patent will expire on October 23, 2030.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/psoriatic-arthritis/how-cosentyx-works
[3] https://www.drugs.com/medical-answers/long-cosentyx-work-3538718/