Do not receive this medication if you have ever had a severe allergic reaction to rituximab, or if you are allergic to mouse protein.
Some people receiving a rituximab injection have had a reaction to the infusion (when the medicine is injected into the vein). Tell your caregiver right away if you feel dizzy, weak, nauseated, light-headed, itchy, or if you have a fever, chills, muscle pain, sneezing, sore throat, trouble breathing, or pain in your chest or shoulders. Infusion reactions often occur within the first 24 hours after the start of your rituximab infusion.
To be sure this medication is not causing harmful effects, your blood will need to be tested on a regular basis. Your kidney or liver function may also need to be tested. Do not miss any scheduled appointments.
If you have hepatitis B you may develop liver symptoms after you stop using this medication, even months after stopping. Your doctor may want to check your liver function at regular visits for several months after you stop using rituximab. Do not miss any scheduled visits.