Side Effects to Adriamycin/Cytoxin

My mother received first dose of Adriamycin/Cytoxin last Wed. Today is Monday. She has received her shot of Aloxi right after treatment, and had Neupogen shot last Thursday. She is taking Adivan. She still is feeling very lightheaded, which of course makes her feel nauseous. The Adivan works somewhat, but is making her very tired. The lightheadedness is staying very consistent. They gave her another medicine to be taken 3 or 4 times a day, but it wasn't helping at all, so she was told 'if it's not working, then don't take it.'

Is the lightheadedness a normal side effect of the Adriamycin? How long does it normally last? How long before she should be concerned enough to go back to the Dr.?