Hi Adria, Many people with ibs get alternating c and d. I myself am predominantly c with cramping, but also get bouts of crampy d. This couldbe the worst for of ibs, because it's hard to know what foods to eat. Since foods that help c can cause d and vice-versa. I tend to try to get both soluable and insoluable fiber throughout the day. If I don't get enough fiber during a meal, I will take a Fiber Choice chew, to help balence. This plan has worked pretty well so far, knock on wood. Take care and good luck.