De mest almindelige bivirkninger ved Zevalin (der ses hos flere end 1 ud af 10 patienter), er anæmi (for lavt antal røde blodlegemer), leukocytopeni og neutropeni (for lavt antal hvide blodlegemer), trombocytopeni (for lavt antal blodplader), kraftesløshed, feber, stivhed og kvalme.
The most common side effects with Zevalin (seen in more than 1 patient in 10) are anaemia (low red blood cell counts), leucocytopenia and neutropenia (low white blood cell counts), thrombocytopenia (low blood platelet counts), asthenia (weakness), pyrexia (fever), rigors (stiffness) and nausea (feeling sick).