That's not a lot of anti nausea drugs. You will use all four at different times. Some are only good for several days at a time, like Zofran. I would also recommend compazine suppositories as a back up - you can't throw them up.

I would ask for a second opinion on the "Head and Shoulders" - that stuff's pretty brutal.

The manufacturers labeling says nothing using it See: http://www.fda.gov/CDER/consumerinfo/druginfo/Erbitux.htm