 <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]  product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.The uses of Nexviazyme Vial: This medication is used by people with a certain inherited condition (Pompe disease) to reduce high levels of a certain substance (glycogen) that builds up in the blood. Having high levels of glycogen in the blood may cause muscle weakness, heart problems, and breathing problems. Avalglucosidase alfa works by breaking down glycogen in the blood. How to use Nexviazyme Vial This medication is given by injection into a vein by a health care professional. It is given as directed by your doctor, usually once every 2 weeks. The dosage is based on your weight, medical condition, and response to treatment. Your doctor may prescribe other medications for you to take before treatment to help lessen the risk of infusion reactions. Carefully follow your doctor's directions. See also Warning section. Use this medication regularly to get the most benefit from it. To help you remember, mark the days on the calendar when you need to receive the medication.The side effects of Nexviazyme Vial: See also Warning section. Dizziness, muscle/joint pain, headache, diarrhea, nausea </s>