IMPORTANT SAFETY INFORMATION Serious infections have happened in patients taking CIMZIA, including tuberculosis (TB) and infections caused by viruses, fungi, or bacteria that have spread throughout the body. Some patients have died from these infections. Other serious side effects have happened including certain kinds of cancers including lymphoma, heart failure, allergic reactions, hepatitis B infection in carriers of the virus, nervous system problems, blood problems, and certain immune reactions including lupus-like syndrome. Click to open full Prescribing Information.