Benlysta (belimumab) is a prescription drug that’s used to help manage certain types of lupus. It’s not known whether Benlysta is safe to use while pregnant or breastfeeding.

If you can become pregnant, it’s important to consider whether Benlysta is a safe option for you.

It’s not known whether it’s safe to use Benlysta during pregnancy.

At this time, it isn’t known whether Benlysta may raise the risk of problems with fetal development (also known as birth defects) or pregnancy loss. If you can become pregnant, your doctor may recommend using birth control during your treatment due to these risks. You’ll continue using birth control for at least 4 months after your last dose of Benlysta.

Because Benlysta affects your immune system, the drug can also weaken the immune system in a fetus. It’s important to note that untreated lupus may cause risks during pregnancy. Your doctor can determine how to treat your lupus during your pregnancy.

If you’re pregnant or planning to become pregnant, talk with your doctor about the best treatment options for you.

Pregnancy registry

A pregnancy registry for Benlysta collects information on whether the drug affects pregnancy. If you become pregnant during Benlysta treatment, you or your doctor can sign you up for the registry by calling 877-311-8972.

If you’re currently breastfeeding or planning to do so, it’s important to understand the effects Benlysta could have on you or your child.

It’s not known whether Benlysta is safe to use while breastfeeding. This is because it’s not known whether the drug passes into breast milk or what effects it may have on a child who is breastfed.

If you’re breastfeeding, or planning to breastfeed, talk with your doctor about the best treatment options for you.

Disclaimer: Healthline has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.