The high mucilage content of Marshmallow makes it an excellent demulcent that can be used wherever such properties are called for. Whilst having broadly similar effects, the root is used primarily for digestive problems and on the skin, whilst the leaf is used for the lungs and urinary system. In all inflammations of the digestive tract, such as inflammations of the mouth, gastritis, peptic ulcer, enteritis and colitis, the root is strongly advised. For bronchitis, respiratory catarrh and irritating coughs Marshmallow should be considered. The New Holistic Herbal by David Hoffmann Pg.214