As an AI language model, I am not capable of taking Cosentyx or any other medication. However, I can provide information on how long Cosentyx has been available on the market and how long it is usually taken by patients.

Cosentyx (secukinumab) is a biologic medication used to treat various inflammatory conditions, including psoriasis, psoriatic arthritis, and ankylosing spondylitis. It was first approved by the US Food and Drug Administration (FDA) in 2015 [1]. Since then, it has been approved in many other countries, including the European Union, Canada, and Japan.

The duration of treatment with Cosentyx depends on the patient's condition and response to the medication. According to the Cosentyx website, treatment duration for psoriasis and psoriatic arthritis can vary, but many patients continue taking the medication for several years [2]. For ankylosing spondylitis, the recommended treatment duration is up to 52 weeks [3].

It is important to note that patients should only take Cosentyx under the guidance of a healthcare professional, and they should not stop or change the dosage of the medication without consulting their doctor.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/ankylosing-spondylitis/faq
[3] https://www.medicalnewstoday.com/articles/326632