Cosentyx is a biologic medication used to treat psoriasis and psoriatic arthritis. It is administered by injection and its dosage varies depending on the patient's condition and response to treatment.

According to the drug patent watch [1], Cosentyx's recommended dosage for psoriasis is an initial dose of 300 mg, followed by 300 mg every 4 weeks. For psoriatic arthritis, the recommended dosage is an initial dose of 150 mg or 300 mg, followed by 150 mg or 300 mg every 4 weeks.

The frequency of administration is important to maintain the efficacy of the medication. As stated on the Cosentyx website [2], it is essential to follow the treatment plan recommended by the healthcare provider to achieve the best results. Missing doses or delaying treatment may affect the effectiveness of the medication.

A study published in the US National Library of Medicine [3] showed that Cosentyx is effective in treating psoriasis and psoriatic arthritis with a favorable safety profile. The study also found that the medication's efficacy and safety were maintained over a period of 52 weeks with continuous treatment.

In conclusion, Cosentyx's recommended dosage varies depending on the patient's condition and response to treatment. It is important to follow the treatment plan recommended by the healthcare provider to maintain the medication's efficacy. Continuous treatment with Cosentyx has shown to be effective and safe in treating psoriasis and psoriatic arthritis.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/psoriatic-arthritis/faq
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5013855/