I am being treated for inoperable metastatic mesenteric cancer with the monoclonal antibody Vectibix. This is by iv infusion every two weeks. After 2nd session I have had many episodes of very low blood pressure(88/58) with extreme shortness of breath occurring when I do moderate activity. I’ve read that this is a side effect of Vectibix. Anyone else had similar experience and if so how did you deal with it?