 <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]  receiving your first dose of rituximab by injection into a vein. The dosage and treatment schedule are based on your medical condition, other medications you may be taking, and response to treatment. Ask your doctor if you should take your regular medications (such as drugs for high blood pressure) before your treatment.The side effects of Rituxan Hycela Subcutaneous: See also Warning section. Pain, swelling, bruising, redness, or itching at the injection site may occur. Headache, nausea, weakness, or dizziness may also 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: abdominal pain, increased thirst/urination, swelling of the hands/feet, tingling of the hands/feet. Rituximab sometimes causes side effects due to the rapid destruction of cancer cells (tumor lysis syndrome). To lower your risk, your doctor may add </s>