De mest almindelige bivirkninger ved Temodal (som optræder hos flere end 1 ud af 10 patienter) er kvalme, opkastning, forstoppelse, anoreksi (appetitløshed), alopeci (hårtab), hovedpine, træthed, kramper, udslæt, neutropeni eller lymfopeni (lavt antal hvide blodlegemer) og trombocytopeni (lavt antal blodplader).
The most common side effects with Temodal (seen in more than 1 patient in 10) are nausea (feeling sick), vomiting, constipation, anorexia (loss of appetite), alopecia (hair loss), headache, fatigue (tiredness), convulsions (fits), rash, neutropenia or lymphopenia (low white blood cell counts), and thrombocytopenia (low blood platelet counts).