I am on Nexavar (5 months now) and have had severe diarrhea. I have found that if I have cream of rice cereal "every day" it helps me a lot. I have the 1 serving amount, and my coffee for breakfast.
Tried different pills, but they seemed to create other problems.
Stll have some diarrhea but usually in the evening & mild. Of course you can't go pigging out on known diahrretic type foods.