Read the Medication Guide provided by your pharmacist before you start using belimumab and each time you get a treatment. If you have any questions, ask your doctor or pharmacist.

This medication is given by injection into a vein over 1 hour by a health care professional. It is given as directed by your doctor, usually every 2 weeks for the first 3 doses, then every 4 weeks thereafter. The dosage is based on your weight.

Infusion reactions may happen during or after the infusion of this drug. Your doctor may prescribe other medications before each treatment to help prevent these side effects. Tell your doctor right away if you have any symptoms of infusion reactions such as headache, slow heartbeat, muscle pain, dizziness/fainting, or nausea. 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. It may help to mark your calendar with a reminder.

Tell your doctor if your condition does not improve or if it worsens.