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What are the most common adverse effects of rituximab?

Author

Mia Kelly

Published Jan 16, 2026

Common side effects may include:

  • low white and red blood cells (fever, chills, body aches, pale skin, unusual tiredness, infections);
  • nausea, diarrhea;
  • swelling in your hands or feet;
  • headache, weakness;
  • painful urination;
  • muscle spasms;
  • depressed mood; or.
  • cold symptoms such as stuffy nose, sneezing, sore throat.

What are the most common side effects of Rituxan?

What are the possible side effects of Rituxan?

  • fever.
  • cold symptoms, such as runny nose or sore throat, that do not go away.
  • flu symptoms, such as cough, tiredness, and body aches.
  • earache or headache.
  • pain during urination.
  • cold sores in the mouth or throat.
  • cuts, scrapes, or incisions that are red, warm, swollen, or painful.

What are the long term side effects of rituximab?

Does Rituxan cause any long-term side effects?

  • heart problems, such as heart attack or ventricular fibrillation (a type of abnormal heart rhythm)
  • blockage or tearing of your intestines.
  • kidney failure or other serious kidney problems.
  • serious infections, such as shingles.
  • reactivation of the hepatitis B virus*

How will I feel after rituximab infusion?

After a Rituxan (rituximab) infusion you may experience certain side effects or adverse reactions that make you feel unwell. Rituxan affects different people in different ways, but the more common side effects include: Fever (high temperature), muscle aches, headaches and chills, which are signs of infection.

Which of the following side effects is the most common reason for discontinuing rituximab?

The three most common reasons for rituximab discontinuation in RA were ineffectiveness, death and adverse events.

28 related questions found

Does Rituxan cause neuropathy?

Conclusion: Although rare, acute worsening of the neuropathy can occur after Rituximab. The deterioration is however reversible within some weeks to several months.

What are the contraindications of Rituxan?

Contraindications to rituximab include hypersensitivity to rituximab or other murine proteins, active severe infections and severe heart failure (New York Heart Association class IV; ).

Does rituximab lower immune system?

Rituximab suppresses the immune system. Therefore, serious fungal, bacterial, and new or reactivated viral infections (for example, hepatitis B or C, shingles) can occur during or after treatment with rituximab. Generally, rituximab is avoided in the presence of active, significant infections.

How long are you immunocompromised after rituximab?

While plasma cells and existing antibody levels are not affected, depletion of B cells following rituximab decreases humoral immune responses to primary antigens; in addition, as a result of prolonged decrease in MBCs, antibody production to recall antigens is decreased even 6-10 months after treatment (6).

Is rituximab a form of chemotherapy?

RITUXAN is not chemotherapy. RITUXAN is a type of antibody therapy that can be used alone or with chemotherapy. They work in different ways to find and attack the cells where cancer starts. RITUXAN targets and attaches to the CD20 protein found on the surface of blood cells with cancer and some healthy blood cells.

Is rituximab an immunotherapy?

Rituximab was approved by the US Food and Drug Administration for use in DLBCL nearly 20 years ago. It was the first immunotherapy approved for specific use in cancer, and it quickly demonstrated a dramatic improvement in outcomes in patients with DLBCL when combined with chemotherapeutic agents.

How long can you take rituximab?

Rituxan can provide up to 6 months of symptom improvement from 1 course of treatment (2 infusions given 2 weeks apart). Be sure to talk with your doctor to find out if starting and continuing treatment with Rituxan is right for you.

Is Rituxan and rituximab the same?

Rituxan is the trade name for rituximab. In some cases, health care professionals may use the trade name rituxan when referring to the generic drug name rituximab. Drug type: Rituximab is a monoclonal antibody. (For more detail, see "How this drug works" section below).

Are rituximab side effects cumulative?

Rituxan side effects are often predictable in terms of their onset and duration. Rituxan side effects are almost always reversible and will go away after treatment is complete.

What does rituximab do to your body?

Rituximab is used to treat certain types of cancer (such as non-Hodgkin's lymphoma, chronic lymphocytic leukemia). It works by slowing or stopping the growth of cancer cells. Some brands of rituximab are also used to treat rheumatoid arthritis and can decrease joint pain and swelling.

Does Rituxan cause shortness of breath?

These reactions usually involve fever and chills. Other side effects commonly seen with Rituximab include skin rash and itching, flushing, nausea, vomiting, fatigue, and headache; cold like symptoms; sensation of tongue or throat swelling; and difficulty breathing, including shortness of breath.

Can you get the Covid vaccine if you take rituximab?

Rituxan is a medication that lowers the amount of immune cells called B cells. Because of its effects on the immune system, COVID-19 vaccines may not work as well for people using Rituxan. Still, it's recommended that you receive these vaccines and any boosters even if you use this medication.

Is rituximab used for Covid?

Prior treatment with cancer drug likely renders COVID-19 vaccine ineffective, study finds. Rituximab, a drug widely used in patients with lymphoma, blunts or eliminates the antibody response to COVID-19 vaccines if it is administered before them, Stanford researchers say.

How long does fatigue last after Rituxan infusion?

It would hit in week three. I would feel exhausted for about three weeks. My energy would improve and I would be back to normal in 8 – 10 weeks. I worked through all of the Rituxan treatments and took some kind of a walk every day.

Is rituximab better than methotrexate?

The final results indicated that rituximab combined with MTX obtained better clinical outcomes than MTX alone. The clinical outcomes reflecting more ACR20, ACR50, and ACR70 are clinically significant.

Does Rituxan affect the kidneys?

It reduces the number of white blood cells called B lymphocytes — which are responsible for creating antibodies that cause kidneys to malfunction.

Is there an alternative to rituximab?

Ofatumumab is a feasible alternative anti-CD20 therapy in patients intolerant of rituximab.

What medications interact with rituximab?

Moderate interactions of rituximab include:

  • amphotericin B deoxycholate.
  • belatacept.
  • cholera vaccine.
  • cisplatin.
  • denosumab.
  • fingolimod.
  • ioversol.
  • sipuleucel-T.

Can rituximab cause high blood pressure?

More rarely, Rituximab can make your blood pressure go up. Your nurse will check your blood pressure regularly during your infusion, to monitor any changes.

Can rituximab cause heart problems?

It is advised that rituximab infusion may cause infusion reactions and adverse cardiac effects including arrhythmia and angina, especially in patients with prior history of cardiovascular diseases.