Tositumomab is a monoclonal antibody that is linked with radioactive iodine I-131.
Monoclonal antibodies are made to target and destroy only certain cells in the body. This may
help to protect healthy cells from damage.
Tositumomab is used to treat certain forms of non-Hodgkin's lymphoma. It is usually
given after other medications have been tried without successful treatment.
Tositumomab may also be used for other purposes not listed in this medication guide.