 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  medication is given by slow injection into a vein by a health care professional as directed by your doctor. The dosage and treatment schedule are based on your medical condition, body size, and response to treatment.The side effects of Rituximab-Abbs Intravenous: See also Warning section. Nausea, vomiting, headache, dizziness, joint/muscle pain, weakness, or flushing may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. People using this medication may have serious side effects. However, you have been prescribed this drug because your doctor has judged that the benefit to you is greater than the risk of side effects. Careful monitoring by your doctor may decrease your risk. Tell your doctor right away if you have any serious side effects, including: signs of stomach/intestinal blockage (such as constipation, stomach/abdominal pain), swelling hands/ankles/feet, increased thirst/urination, numbness/tingling of arms/legs. Rituximab sometimes causes side effects due to the rapid destruction of cancer cells (tumor lysis syndrome). To lower your risk, your doctor may add a medication and tell you to drink plenty </s>