Belimumab can make it harder for your body to fight infections. Therefore, if you have a fever, think you may have an infection or have been prescribed an antibiotic, contact your healthcare provider immediately. Also, contact your prescriber if you are having surgery, as you may need to stop belimumab until you are healed and there is no sign of infection.
Before taking belimumab, tell your healthcare provider if you are pregnant or planning to become pregnant or are breastfeeding/chestfeeding or planning to breastfeed/chestfeed. Currently there are no studies to assess the use of belimumab during pregnancy and breastfeeding/chestfeeding. Your healthcare provider will discuss the risks and benefits of taking belimumab while you are pregnant.
Ideally, your vaccinations should be up to date prior to starting belimumab. If you have already started therapy with belimumab, most inactive vaccines are recommended (i.e. influenza, pneumococcal, RSV, shingles). Live vaccines are not recommended due to risk of causing infection.
Anyone who has had a previous allergic reaction to belimumab should avoid the medication.
Belimumab has been very rarely associated with a small increased risk of developing certain types of cancer. The role of belimumab in the development of cancer is currently unknown. Please speak with your healthcare provider if you have any questions.