Stelara (Ustekinumab): A Comprehensive Guide for Patients in India

Navigating the complexities of chronic autoimmune conditions can be challenging, and finding the right treatment is paramount. For individuals in India dealing with conditions like plaque psoriasis and psoriatic arthritis, Stelara, a biologic medication containing ustekinumab, offers a targeted approach. This guide aims to provide you with a clear, practical understanding of Stelara, its uses, how it works, potential side effects, and what you can expect during treatment. We'll cover everything from dosage to when to seek medical advice, all explained in a way that's easy to grasp.

What is Stelara and How Does it Work?

Stelara is a prescription medication that belongs to a class of drugs called biologics. Biologics are made from living cells and are designed to target specific parts of the immune system. In Stelara's case, the active ingredient is ustekinumab. This medication works by targeting two specific proteins in the body: interleukin-12 (IL-12) and interleukin-23 (IL-23). These proteins play a significant role in the inflammation associated with certain autoimmune diseases.

By blocking IL-12 and IL-23, Stelara helps to reduce the inflammation that causes the symptoms of conditions like plaque psoriasis and psoriatic arthritis. This targeted action means it can be more specific than some other treatments, focusing on the root cause of the inflammation rather than broadly suppressing the immune system.

What Conditions Does Stelara Treat?

In India, Stelara is primarily prescribed for the following conditions:

• Plaque Psoriasis: This is a chronic autoimmune disease that causes raised, red, scaly patches on the skin. Stelara is used for moderate to severe plaque psoriasis in adults and some children who have not responded well to or cannot tolerate other treatments.
• Psoriatic Arthritis: This is a form of arthritis that affects some people who have psoriasis. It can cause joint pain, stiffness, and swelling. Stelara can help manage the symptoms of psoriatic arthritis in adults and some children, often when used in conjunction with plaque psoriasis treatment.

It's important to understand that Stelara manages these conditions by reducing inflammation; it does not cure the underlying disease. Continuous treatment is often necessary to maintain symptom control.

Understanding Stelara Dosage and Administration

The dosage of Stelara is highly individualized and depends on several factors, including your age, weight, and the specific condition being treated. Your doctor will determine the most appropriate dose and schedule for you.

For Plaque Psoriasis:

For adults with plaque psoriasis, the dosage is typically based on body weight. Stelara is administered as an injection under the skin. For children aged 6 and older with plaque psoriasis, a specific dosage schedule, also based on weight, will be recommended by their doctor. All doses for this group are given as an injection under the skin.

For Psoriatic Arthritis:

If you have psoriatic arthritis, your dosage might depend on your body weight, especially if it exceeds 100 kg and you also have plaque psoriasis. The medication is given as an injection under the skin.

Initial Treatment (Loading Dose):

For some patients, the initial treatment involves an intravenous (IV) infusion. This infusion typically lasts at least one hour. The dose for this initial infusion is determined by your body weight.

Subsequent Treatments:

Following the initial IV infusion, your doctor will prescribe regular injections of Stelara. For example, a common schedule might involve a 90-mg injection under the skin 8 weeks after the loading dose, followed by 90-mg injections every 8 weeks thereafter. Your doctor will provide precise instructions.

Important Note on Administration: Stelara is available in prefilled syringes and vials. It is crucial that Stelara is administered by a healthcare professional or that you receive proper training on how to self-administer it at home, as prescribed by your doctor.

Potential Side Effects of Stelara

Like all medications, Stelara can cause side effects. While serious side effects are not common, they can occur. It's essential to be aware of these possibilities.

Common Mild Side Effects:

Many patients experience mild side effects that often resolve on their own within a few days or weeks. If these become bothersome, you should speak with your doctor or pharmacist. Common mild side effects include:

• Upper respiratory infections (like the common cold)
• Headaches
• Redness, itching, or swelling at the injection site
• Skin discoloration at the injection site

Serious Side Effects:

Although less common, serious side effects can happen. You should contact your doctor immediately if you experience any of the following:

• Signs of infection: Fever, chills, persistent cough, sore throat, fatigue, or any other signs of a new infection. Stelara can lower your immune system's ability to fight infections.
• Allergic reactions: Rash, itching, hives, swelling of the face, lips, tongue, or throat, or difficulty breathing.
• Serious infections: Such as tuberculosis (TB) or fungal infections. Your doctor will likely screen you for TB before you start Stelara.
• Certain types of cancer: Though rare, there's a potential increased risk of certain skin cancers and other cancers.
• Neurological problems: Such as posterior reversible encephalopathy syndrome (PRES), which can cause symptoms like headache, confusion, seizures, and vision changes.

When to Seek Immediate Medical Help: If you think you are experiencing a medical emergency, call 911 or your local emergency number immediately. For serious side effects that are not an emergency, call your doctor right away.

When to Consult Your Doctor

It's vital to maintain open communication with your healthcare provider throughout your Stelara treatment. You should consult your doctor in the following situations:

• Before starting Stelara: Discuss your full medical history, including any infections, cancer history, or allergies.
• If you develop any signs of infection or if an infection you have does not clear up.
• If you experience any symptoms of an allergic reaction.
• If you notice any new or worsening skin lesions or lumps.
• If you experience any unusual symptoms that concern you.
• To schedule your regular doses and follow-up appointments.

Stelara and Biosimilars

You may hear about biosimilar versions of Stelara. Biosimilars are highly similar to biologic medications like Stelara and are approved by regulatory agencies only after demonstrating they have no clinically meaningful differences in terms of safety, purity, and potency. Examples include Selarsdi, Wezlana, and Steqeyma. Your doctor will discuss if a biosimilar is an appropriate option for you.

Living with Psoriasis and Psoriatic Arthritis

Managing conditions like plaque psoriasis and psoriatic arthritis involves more than just medication. While Stelara targets the inflammation, lifestyle plays a significant role in overall well-being.

• Diet and Nutrition: A balanced diet can help manage inflammation. Focus on whole foods, fruits, vegetables, and lean proteins.
• Fitness: Regular, gentle exercise can help manage joint stiffness and improve mood. Consult your doctor for appropriate exercises.
• Stress Management: Stress can trigger flare-ups. Techniques like mindfulness, meditation, or yoga can be beneficial.
• Skin Care: For psoriasis, maintaining good skin hydration and avoiding harsh soaps can help.

Frequently Asked Questions (FAQ)

Q1: Can I take Stelara if I have an infection?

Generally, you should not start Stelara if you have an active serious infection. Your doctor will assess your health and may want to treat any existing infections before you begin Stelara. It's important to inform your doctor about any history of infections, including tuberculosis.

Q2: How long does it take for Stelara to start working?

The time it takes for Stelara to work can vary from person to person. Some individuals may notice improvement in their symptoms within a few weeks, while for others, it might take longer. Your doctor will monitor your response to the treatment.

Q3: Can Stelara be used in children?

Yes, Stelara is approved for use in certain children aged 6 years and older for plaque psoriasis and psoriatic arthritis, under specific weight-based dosing guidelines.

Q4: What should I do if I miss a dose of Stelara?

If you miss a scheduled injection, contact your doctor or healthcare provider immediately. They will advise you on the best course of action, which may involve rescheduling the dose as soon as possible.

Q5: Can Stelara interact with other medications?

Stelara can potentially interact with other medications, particularly those that affect the immune system. Always provide your doctor with a complete list of all medications, supplements, and herbal products you are taking.