Ustekinumab 45mg Injection (Generic Stelara 45)

Ustekinumab 45mg Injection is a prescription biologic medicine containing ustekinumab, a human monoclonal antibody that selectively targets interleukin-12 (IL-12) and interleukin-23 (IL-23). It is used for the treatment of certain immune-mediated inflammatory conditions, including moderate-to-severe plaque psoriasis and active psoriatic arthritis, according to the applicable indication and prescribing guidelines.

Ustekinumab is the active ingredient in Stelara®, the reference biologic. Ustekinumab 45mg products may be marketed under different brand names depending on the manufacturer and country.

Product Information

• Generic Name: Ustekinumab 45mg
• Reference Brand: Stelara®
• Drug Class: Biologic / IL-12 and IL-23 Inhibitor
• Indications: Plaque Psoriasis / Psoriatic Arthritis
• Form: Injection
• Strength: 45mg
• Route: Subcutaneous Injection
• Prescription: Yes
• Active Ingredient: Ustekinumab
• Packing: Manufacturer Dependent

How It Works

Ustekinumab is a human monoclonal antibody that binds to the p40 protein subunit shared by IL-12 and IL-23. By inhibiting these cytokine pathways, it reduces inflammatory immune activity associated with psoriasis and psoriatic arthritis.

Uses

Ustekinumab 45mg may be prescribed for eligible patients with:

• Moderate-to-severe plaque psoriasis
• Active psoriatic arthritis

The appropriate dose and treatment interval depend on the patient’s condition, body weight, age, and the prescribing information applicable to the specific product.

Generic Stelara® / Ustekinumab 45mg

Stelara® is the reference brand containing ustekinumab. Ustekinumab 45mg products may be available as biosimilars or other approved alternatives depending on the country and regulatory authorization.

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Ustekinumab 45mg Injection

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Availability & Ordering

Patients searching for Ustekinumab 45mg Injection, Buy Ustekinumab 45mg Online, Generic Stelara®, Ustekinumab 45mg Price, Ustekinumab for Psoriasis, Ustekinumab for Psoriatic Arthritis, Ustekinumab Biologic Injection, and Ustekinumab IL-12/23 Inhibitor can find prescription products through licensed pharmaceutical suppliers, subject to local prescription and regulatory requirements.

Frequently Asked Questions

What is Ustekinumab 45mg Injection used for?

Ustekinumab 45mg is used primarily for moderate-to-severe plaque psoriasis and active psoriatic arthritis in eligible patients.

Is Ustekinumab the generic of Stelara®?

Stelara® is the reference product containing ustekinumab. Ustekinumab products may be approved as biosimilars or alternatives to Stelara® depending on the regulatory authority and specific product.

How does Ustekinumab 45mg work?

It blocks the activity of IL-12 and IL-23 by binding to their shared p40 subunit, helping reduce inflammatory immune responses.

How is Ustekinumab 45mg administered?

It is administered by subcutaneous injection according to the dosing schedule prescribed by a qualified healthcare professional.

Is Ustekinumab 45mg the same as Ustekinumab 90mg?

Both contain the same active ingredient, ustekinumab, but they contain different amounts of the medicine. The appropriate strength depends on the patient’s indication and other prescribing factors.

Does Ustekinumab require medical monitoring?

Yes. Ustekinumab is an immunomodulating biologic medicine and should be prescribed and monitored by a qualified healthcare professional.

Last Updated: August 20, 2026 | Medically Reviewed By: Licensed Pharmacist

Medical Disclaimer: This information is provided for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Ustekinumab should be used only under the supervision of a qualified healthcare professional.