Just to follow up on your message. I too found Calcium tablets (Calcium Citrate-450mg twice a day) to be my solution for the diarrhea. However, how I found out about it was really by chance. I was taking them as a dietary supplement and discovered that they were helping to control my diarrhea. A food that also helps are nuts. In particular I eat cashews, almonds and pecans several times a day, a handful at a time. I think your search is over concerning a natural solution since calcium is mineral required by the body and the nuts are a natural food source.