This IS/WAS me, but not too much anymore. I started Herceptin 8/18/05 and after the problems starting and persisting until 12/22/05, my doc had a brain CT (which came back normal) and refered me to a neurologist (I am also epileptic and there was hope I could get off meds...no such luck as they found seizure activity) and he did an MRI (ALSO, came back normal). If you look at the side effects of Herceptin, dizzy is one which for me is NOW amplified by the NEW seizure medicine they put me on (which ALSO has dizzy as a side effect). Here as some links to the posts I had when I had your same questions and the replies I got. Take care and God bless.
Rhonda
http://her2support.org/vbulletin/sho...t=dizzy+rhonda
http://her2support.org/vbulletin/sho...t=dizzy+rhonda