Kesimpta is a prescription medication used to treat clinically isolated syndrome and specific types of multiple sclerosis. Kesimpta comes as a liquid solution for injection under your skin. Common ...

Kesimpta is a biologic drug, which means it’s made from parts of living organisms. It contains the active ingredient ofatumumab. Kesimpta belongs to a group of drugs called monoclonal antibodies. It ...

Kesimpta can cause injection site reactions, headache, back pain, and other side effects. Kesimpta reduces immune system activity, which increases your risk of getting sick more easily than usual.