Free Helpline
We are here to assist you.
Health Advisor
+91-8877772277Available 7 days a week
10:00 AM – 6:00 PM to support you with urgent concerns and guide you toward the right care.
We are here to assist you.
Health Advisor
+91-8877772277Available 7 days a week
10:00 AM – 6:00 PM to support you with urgent concerns and guide you toward the right care.
Learn about the potential side effects of Arzerra (ofatumumab), a medication used for Chronic Lymphocytic Leukemia (CLL). This guide covers common, mild, and serious side effects, management strategies, and when to seek medical help for Indian patients.
Arzerra, with the active ingredient ofatumumab, is a prescription medication used in the treatment of Chronic Lymphocytic Leukemia (CLL), particularly in adults and often in combination with other drugs. As a biologic medication derived from living organisms, it offers a targeted approach to managing this type of leukemia. While Arzerra can be an effective treatment, it is crucial for patients to be aware of its potential side effects, ranging from mild to serious. This guide aims to provide clear, practical information for Indian readers on what to expect, how to manage these effects, and when to seek medical attention.
Arzerra (ofatumumab) is a monoclonal antibody that targets a specific protein (CD20) found on the surface of B-cells, including cancerous CLL cells. By binding to this protein, Arzerra helps the immune system identify and destroy these cells. It is administered intravenously (IV infusion) by a healthcare professional over a period of time. The duration of treatment can vary, typically up to a maximum of two years, depending on the progression and management of CLL.
Like many medications, Arzerra can cause side effects. Many of these are mild and temporary, often manageable with medical guidance. The most frequently reported mild side effect is related to the infusion process itself.
Infusion reactions are side effects that occur during or within 24 hours after receiving an Arzerra IV infusion. These can range from mild to severe. Mild symptoms may include:
Healthcare providers monitor patients closely during and after infusions to manage these reactions promptly. If you experience any of these symptoms, it is important to inform your medical team immediately.
Another commonly reported mild side effect is an upper respiratory infection, similar to the common cold. Symptoms may include:
Maintaining good hygiene, such as frequent handwashing, can help reduce the risk of these infections. If symptoms worsen or persist, consult your doctor.
Other mild side effects that have been reported include:
In most cases, these mild side effects are temporary and can be managed. However, if any side effect becomes persistent, bothersome, or interferes with your daily life, it is essential to discuss it with your doctor or pharmacist. Do not stop Arzerra treatment without consulting your doctor.
While less common, Arzerra can also cause serious side effects. It is crucial to be aware of these and seek immediate medical attention if they occur.
Tumor Lysis Syndrome is a serious condition that can occur when cancer cells release harmful substances into the bloodstream as they are destroyed. Symptoms of TLS can include:
Your doctor will monitor your blood chemistry for signs of TLS, especially during the initial phase of treatment. Staying hydrated is important.
Arzerra can lead to a low level of platelets, which are essential for blood clotting. A low platelet count can increase the risk of bleeding. Signs of low platelets include:
Your doctor will regularly monitor your blood counts during treatment.
Arzerra carries a boxed warning for the risk of Hepatitis B virus reactivation. This means that if you have been exposed to the Hepatitis B virus in the past (even if you don't have active symptoms), the virus can become active again during Arzerra treatment. This can lead to severe liver damage. Before starting Arzerra, your doctor will test you for Hepatitis B. If you have a history of Hepatitis B, you may need additional monitoring and treatment.
Another serious risk associated with Arzerra, also carrying a boxed warning, is Progressive Multifocal Leukoencephalopathy (PML). PML is a rare but severe brain infection caused by a virus that can reactivate in people with weakened immune systems. Symptoms of PML can develop gradually and may include:
If you experience any of these neurological symptoms, contact your doctor immediately.
Although rare, severe allergic reactions can occur. Symptoms of a severe allergic reaction are life-threatening and require immediate emergency medical care. Call 911 or your local emergency number if you experience:
Managing side effects involves close collaboration between the patient and the healthcare team. Here are some general strategies:
It is essential to consult your doctor or seek immediate medical attention in the following situations:
Post-Treatment Side Effects: Some side effects, such as neutropenia (low white blood cell count), can occur up to 42 days after your last dose of Arzerra, and in some cases, may persist even after stopping the drug. Similarly, certain infusion reactions or allergic responses might occur up to 24 hours after an infusion, and some risks like Hepatitis B reactivation can manifest up to 12 months after the last dose.
Reporting Side Effects: If you wish to report a side effect you have experienced with Arzerra to the regulatory authorities, you can visit the FDA's MedWatch program.
Arzerra is a valuable treatment option for CLL, but like all medications, it comes with potential side effects. Understanding these effects, recognizing their symptoms, and maintaining open communication with your healthcare provider are key to managing your treatment safely and effectively. Your medical team is your best resource for navigating any challenges that may arise during your treatment journey.
Sleeping tablets can help manage insomnia and sleep disorders when used correctly. This guide explains types, benefits, risks, and safe usage tips for better sleep health.
April 11, 2026
Explore the short-term and long-term effects of Adderall on the brain, including its uses, side effects, risks of misuse, and the importance of medical supervision for safe and effective treatment.
April 1, 2026
Curious if Pepto-Bismol can help your stomach after drinking? We explore the potential risks and what the research says about mixing Pepto-Bismol and alcohol, plus safer alternatives for hangover relief.
April 1, 2026