Kesimpta is a brand-name liquid solution for subcutaneous injection. It’s prescribed for certain forms of multiple sclerosis (MS). It contains the active ingredient ofatumumab. It’s not known whether Kesimpta is safe to use during pregnancy and breastfeeding.

Keep reading for specific information about reproductive health and Kesimpta. For a comprehensive look at Kesimpta, see this article.

It’s not known whether Kesimpta is safe to use while pregnant. Clinical studies of drugs that work similarly to Kesimpta showed that when they were used during pregnancy, some infants were born with a weakened immune system. But it’s not known how long this effect may last or whether it will occur when females* use Kesimpta.

Animal studies show that pregnant animals given Kesimpta had an increased risk of pregnancy loss.

If you’re pregnant or thinking about becoming pregnant, talk with your doctor. They can review the advantages and risks of Kesimpta with you.

* Sex and gender exist on spectrums. Use of the term “female” in this article refers to sex assigned at birth.

It’s not known whether Kesimpta is safe to use while breastfeeding. It’s also not known whether Kesimpta passes into breast milk.

If you’re breastfeeding or thinking about it, talk with your doctor before using Kesimpta. They may recommend a different treatment option for you.

It’s not known whether Kesimpta is safe to use during pregnancy. If you’re sexually active and you or your partner can become pregnant, talk with your doctor about your birth control needs while you’re using Kesimpta.

For more information about using Kesimpta during pregnancy, talk with your doctor.

For females using Kesimpta

If you’re a female* who can become pregnant, you should use an effective form of birth control during treatment with Kesimpta. You should continue using birth control throughout your treatment with Kesimpta and for at least 6 months after your last dose.

* Sex and gender exist on spectrums. Use of the term “female” in this article refers to sex assigned at birth.

For males using Kesimpta

The manufacturer of Kesimpta doesn’t have specific recommendations about birth control in males* using the drug. If you’re a male using Kesimpta, talk with your doctor about your birth control needs.

* Sex and gender exist on spectrums. Use of the term “male” in this article refers to sex assigned at birth.

Disclaimer: Medical News Today 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.