B.C.
Yep, bananas, rice, applesauce and toast really help.
Some people will also say tea but the problem with tea is some of the teas that stop diarrhea in some people give diarrhea to others.
Besides those binding foods, it's important to keep the fluids up.
Pedialyte and Gatorade will help there.
My pediatrician also told me a gut that is irritated sometimes stays irritated for a long time after the initial source of irritation is gone. That's why it can sometimes go on for weeks.
After awhile some yogurt will help to restore some digestive balance.