The duration of the effects of Cosentyx can vary depending on several factors. Cosentyx is a medication used to treat certain autoimmune conditions such as psoriasis, psoriatic arthritis, and ankylosing spondylitis. It works by targeting and blocking a specific protein in the body that is involved in inflammation [1].

According to the information provided by Drug Patent Watch, the patent for Cosentyx is set to expire in 2030 [1]. This suggests that the effects of the medication can last for a significant period of time, as patents are typically granted for a duration of 20 years from the date of filing. However, it is important to note that the expiration of a patent does not necessarily mean that the medication will no longer be effective or available.

In terms of how long Cosentyx stays in the system, the Medical News Today article states that the drug has a half-life of approximately 21 days. This means that it takes about 21 days for half of the drug to be eliminated from the body. However, it is important to note that it can take several months for the drug to be completely eliminated from the system [2].

The Drugs.com website also provides information on the duration of Cosentyx's effects. It states that the medication is typically administered as a subcutaneous injection once a week for the first five weeks, followed by a maintenance dose every four weeks. The effects of the medication can be seen within the first few weeks of treatment, and it is important to continue taking the medication as prescribed to maintain its effectiveness [3].

In summary, the effects of Cosentyx can last for a significant period of time, as indicated by its patent expiration date. However, the drug has a half-life of approximately 21 days and can take several months to be completely eliminated from the system. It is important to follow the prescribed dosage and treatment schedule to maintain the effectiveness of the medication.

Sources:
[1] Drug Patent Watch: Cosentyx Patent Information. Available at: https://www.drugpatentwatch.com/p/biologics/tradename/COSENTYX
[2] Medical News Today: What to know about Cosentyx. Available at: https://www.medicalnewstoday.com/articles/drugs-cosentyx-side-effects
[3] Drugs.com: How long does Cosentyx stay in your system? Available at: https://www.drugs.com/medical-answers/long-cosentyx-stay-system-3558048/