DEar Geri, To add to the above, my husband was on Erbitux also, and the only really hard to manage side effect [after the beginning dose] was the rash. We think it extended his life by close to 8 months and it might have been longer had he not had additional surgery [which further spread the cancer]. His Docs told us that he could continue to take it as long as he could tolerate it. Sending you prayers. Amy in the Ozarks