If I am remembering correctly…that the folfox regime is comprised of 5FU, oxaliplatin, and something else. I remember talking to my doctor about this and she said that the xeloda and oxaliplatin regime came out of folfox. So I am guessing that 5FU and xeloda are related.
This regime has been discussed before. Try searching the forum for 5FU or folfox.
IF you are not comfortable with your doctors decisions, get a second opinion. There are several places to check. Has your dad tried xeloda? I *think* that xeloda has fewer side effects than 5fu, but I am not positive.
Best of luck
Kris