De mest almindelige bivirkninger ved Erbitux (set hos mere end 1 patient ud af 10) er hudreaktioner såsom udslæt og hypomagnesemi (lave niveauer af blodmagnesium), reaktioner i forbindelse med infusionen (såsom feber, kulderystelser, svimmelhed og åndenød), mucositis (mundslimhindebetændelse) og forhøjede niveauer af visse leverenzymer.
The most common side effects with Erbitux (seen in more than 1 patient in 10) are skin reactions such as rash, hypomagnesaemia (low blood magnesium levels), reactions linked to the infusion (such as fever, chills, dizziness and difficulty breathing), mucositis (inflammation of the lining of the mouth) and raised levels of some liver enzymes.