1 Conquer constipationby drinking water and eating high-fiber foods like beans, lentils, vegetables, and fresh or dried fruit.  Drive away diarrhea with bland foods such as rice, bananas, and apples. Drink water to stay hydrated.
substitute (plural substitutes) 1  A replacement or stand-in for something that achieves a similar result or purpose. ( 2 sports) A player who is available to replace another if the need arises, and who may or may not actually do so. ( 3 historical) One who enlists for military service in the place of a conscript.
A blood substitute (also called artificial blood or blood surrogates) is a substance used to mimic and fulfill some functions of biological blood. It aims to provide an alternative to blood transfusion, which is transferring blood or blood-based products from one person into another.