Cosentyx is a biologic drug that is administered subcutaneously (under the skin) [1][2]. The drug comes in a pre-filled syringe or a pre-filled pen, and the injection can be self-administered at home or by a healthcare provider [2]. The recommended dose and frequency of administration depend on the indication being treated [3]. For psoriasis, the recommended dose is 300 mg given as two 150 mg injections at different injection sites every four weeks for the first three doses, and then every four weeks or every eight weeks thereafter. For psoriatic arthritis, the recommended dose is 150 mg or 300 mg given as two 150 mg injections or one 300 mg injection every four weeks. For ankylosing spondylitis, the recommended dose is 150 mg given as two 75 mg injections every four weeks. It is important to follow the instructions for administration provided by the healthcare provider or the package insert to ensure the drug is administered correctly [3].

Sources:
[1] https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] https://www.cosentyx.com/how-to-inject-cosentyx
[3] https://www.medicines.org.uk/emc/product/3669/smpc