Answer
Jun 16, 2026 - 01:47 PM
Serious side effects of Kesimpta (ofatumumab) may include severe infections, such as upper respiratory or urinary tract infections, and a risk of hepatitis B virus reactivation. It can also cause low levels of immunoglobulins, which may increase the risk of infections. If you experience symptoms like fever, chills, persistent cough, or yellowing of the skin or eyes, contact your doctor immediately.
