How often do i need to take my stelara injection for psoriasis?

How often do people take Stelara for psoriasis?

Stelara contains ustekinumab and works by targeting proteins that treigger inflammation in psoriasis. It is given as an injection under the skin. After an initial dose, patients usually receive a second dose four weeks later. After that, injections continue every 12 weeks.

Why do doctors prescribe a loading dose schedule?

The first two doses help the body reach effective drug levels quickly. This 'loading' phase improves early control of plaques and itch. Once steady levels are reached, the 12-week gap maintains control without daily pills.

What is the difference between plaque psoriasis and psoriatic arthritis dosing?

For plaque psoriasis alone, the 12-week schedule applies. For patients who has both psoriasis and psoriatic arthritis, the same 12-week interval works. Doctors may add methotrexate or other agents if arthritis symptoms persist.

Can the interval between injections be shortened or lengthened?

Some patients lose response over time. If plaques return before the next dose, doctors can shorten the interval to every 8 weeks. Data show this is a common adjustment. If strong control continues, lengthening beyond 12 weeks is rarely recommended.

What happens if I miss a dose?

Contact your doctor or infusion center if you miss a scheduled injection. They will tell you the time point for the next dose. Do not double the dose to make up for a missed one.

Why are companies challenging this patent?

Stelara's patent protection ended in 2023 in the U.S. Biosimilar versions of ustekinumab began entering the market in early 2025. Companies challenge patents to gain early entry rights under the Biologics Price Competition and Innovation Act.

When does exclusivity expire?

Primary compound patent protection ended in 2023. Regulatory exclusivity granted by the FDA ended in January 2025. Biosimilars are now available. [1]

What side effects are patients asking about?

Patients commonly report upper respiratory infections, fatigue, and headache. Serious risks include serious infections and possible cancer risks. Doctors monitor tuberculosis screening before starting and during use.

Can biosimilars enter before patent expiry?

Biosimilars entered after the compound patent expired in 2023. They did not advance before that time because the Haiden Biologics Price Competition and Innovation Act protects innovator biologic products until regulatory exclusivity expires.

How much does Stelara cost?

Stelara list price is approximately $13,000 per injection without insurance. Biosimilar versions trade at discounts of 20-30 percent. Insurance coverage, copay assistance, and pharmacy benefit coverage differ je nach insurance plan.

Sources
[1] https://www.drugpatentwatch.com