Following round#12 I did six weeks (28 days) of chemo/radiation. 1500mg of oral Capecitabine on the days of radiation. Although there were some side effects it was nowhere near as bad as the Folfirinox regimen. Still dealt with dehydration issues to some extent but it was manageable. I used a product called Liquid IV (avaialble at Walgreens/CVS etc) which I found to be helpful. There are other similar products as well. I went to the gym regulary during chemo/radiation treatment so felt that it was crucial to stay hydrated. I should note that my treatment protocol was a bit different than the majority of patients as I had a distal pancreatectomy and splenectomy prior to the 12 rounds of folfirinox and chemo/radiation.