 <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]  ask your pharmacist. Keep all products away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Ropeginterferon Alfa-2b-Njft Subcutaneous: Ropeginterferon alfa-2b is used to treat a certain type of cancer (polycythemia vera). This medication is the same as a protein that your body naturally produces (interferon). In the body, it is thought to work by affecting cell function/growth and the body's natural defenses (immune system) in many ways. How to use Ropeginterferon Alfa-2B-Njft 500 Mcg/Ml Subcutaneous Syringe Read the Medication Guide and Instructions for Use provided by your pharmacist before you start using ropeginterferon alfa-2b and each time you get a refill. If you have any questions, ask your doctor or pharmacist. If you are using this medication at home, learn all preparation and usage instructions from your health care professional and the product </s>