As little as possibl
A cramping belly in a toddler benefits more from diet
modification than any med.
Avoid adult preparations of pepto-bismol as these have salycelates that are linked to REYE 's syndrome. Although children's pepto excludes salycelates, I seldom recommend anything. Popsicles, jello, applesauce, graham crackers, pasta & steamed rice are often tolerated by a crampy gut when they want to try eating.