According to the sources provided, Cosentyx dosage can be increased over time depending on the patient's response to treatment. Cosentyx is a biologic medication used to treat psoriasis and psoriatic arthritis [1]. The recommended starting dose for Cosentyx is 300 mg given as two 150 mg subcutaneous injections every four weeks for the first five months of treatment [2]. After the initial treatment period, the dosage can be adjusted based on the patient's response to the medication. The recommended maintenance dose is 300 mg every four weeks, but some patients may benefit from a higher dose of 150 mg every two weeks [2].

A study published in the British Journal of Dermatology showed that increasing the dosage of Cosentyx from 300 mg every four weeks to 300 mg every two weeks improved the response rate in patients with moderate to severe plaque psoriasis [3]. However, it is important to note that increasing the dosage may also increase the risk of adverse effects.

In summary, the recommended dosage for Cosentyx is 300 mg every four weeks, but it can be increased to 150 mg every two weeks based on the patient's response to treatment. However, any dosage adjustments should be made under the guidance of a healthcare provider to ensure safety and efficacy of the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/psoriatic-arthritis/treatment-dosing
[3] https://onlinelibrary.wiley.com/doi/full/10.1111/bjd.20971