You can google Erbitux and read the stated side effects [some of which are very scary] but the one my husband had the most problem with was the rash- all over his body with concurrant swelling in his fingers and toes. He had to stop the Erbitux on 2 occasions because of the rash and we never got the rash under control. In his case Erbitux was given as palliative tx after the chemo failed to stop the growth of the tumors. He was on it for 8 months +-. Amy