 <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]  follow your doctor's directions for using this medication. Learn how to store and discard medical supplies safely. Use this medication regularly to get the most benefit from it. To help you remember, mark the day on the calendar when you need to receive this medication. Do not increase your dose or use this drug more often or for longer than prescribed. Tell your doctor if your condition lasts or gets worse.The side effects of Cyltezo(CF) Pen Subcutaneous: See also Warning section. Redness, itching, pain, or swelling at the injection site may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you develop signs of infection while using this drug, such as: sore throat that doesn't go away, cough that doesn't go away, fever, chills, night sweats, trouble breathing, painful/frequent urination, unusual vaginal discharge, white patches in the mouth (oral thrush). Tell your doctor right away if you have any serious side effects, including: fast/ </s>