According to the sources provided, the frequency of taking Cosentyx depends on the condition being treated. Cosentyx is a medication used to treat various conditions, including psoriasis, psoriatic arthritis, and ankylosing spondylitis.

For psoriasis, the recommended dosing regimen is an initial dose of 300 mg, followed by 300 mg at weeks 1, 2, 3, and 4, and then 300 mg every 4 weeks thereafter [3].

For psoriatic arthritis, the recommended starting dose is 150 mg, followed by 150 mg at weeks 1, 2, 3, and 4, and then 150 mg every 4 weeks [2].

For ankylosing spondylitis, the recommended initial dose is 150 mg, followed by 150 mg at weeks 1, 2, 3, and 4, and then 150 mg every 4 weeks [2].

It is important to note that these dosing regimens may vary depending on individual patient factors and the severity of the condition. Therefore, it is always best to consult with a healthcare professional for personalized dosing instructions.

In conclusion, the frequency of taking Cosentyx varies depending on the condition being treated. For psoriasis, psoriatic arthritis, and ankylosing spondylitis, the initial dosing regimen is followed by maintenance doses every 4 weeks. However, it is essential to consult with a healthcare professional for specific dosing instructions tailored to your individual needs.

Sources:
[2] Cosentyx website - Psoriatic Arthritis FAQ: https://www.cosentyx.com/psoriatic-arthritis/faq
[3] Drugs.com - Cosentyx Dosage: https://www.drugs.com/dosage/cosentyx.html