This medication is given by injection into a vein by a health care professional. It is given as directed by your doctor, usually once a week. It is injected slowly into a vein over 4 hours. The dosage is based on your weight, medical condition, and response to treatment.

Infusion reactions may happen during the infusion of this drug. Your doctor may prescribe other medications (such as antihistamines, drugs for fever) before each treatment to help prevent these side effects. Tell your doctor right away if you have any symptoms of infusion reactions such as fever, chills, shortness of breath, nausea/vomiting, increased blood pressure, headache, chest pain, dizziness, weakness/tiredness, joint pain, flushing, or coughing. Your doctor may give you other medications to help with these side effects or may slow down or stop your treatment for some time.

Use this medication regularly to get the most benefit from it. To help you remember, use it on the same day each week.

Tell your doctor if your condition gets worse.