Hi Theresa and welcome to WhatNext. We have a great search feature on the site that allows you to find things like this. I'm sure someone will come along and give their experieices with Cytoxan, but until then you can find some info by: clicking on the experiences tab, then enter cytoxan in the search bar, you will get several threads and posts back about the term.
Let me know if I can help with anything. click here for the experiences page www.whatnext.com/experiences