Sabudana contains a good amount of potassium that helps to keep your BP in check., Sabudan/ Sago is a food product made from the milk of tapioca root. The root is cleaned, peeled and crushed to release the milk. WB Farmer's Premium Sabudana Promotes Bowel Movement. Sabudana contains resistant starch, a type of starch that passes through your digestive tract undigested. When the resistant starch reaches your colon undigested, it feeds your healthy gut bacteria.