Read the Patient Information Leaflet if available from your pharmacist before you start using alglucosidase alfa and each time you get an infusion. If you have any questions, ask your doctor or pharmacist.

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. It is injected slowly into a vein over 4 hours. The dosage is based on your medical condition, weight, and response to treatment.

Infusion reactions may happen while you are receiving alglucosidase alfa and for a short time after. Tell your doctor or nurse right away if you have any symptoms of infusion reactions such as shortness of breath, fever, sweating, flushing, nausea, or vomiting. Your doctor may slow down or stop your treatment for some time if you get serious side effects. Your doctor may prescribe other medications for you to take to help decrease these side effects. Carefully follow your doctor's directions for all of your medications. 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.