Marshmallow is most commonly used to ease sore throats and dry coughs. It contains polysaccharides that work as a mucilage, producing a thick, sticky substance that coats the mucuous membranes. The flavonoids in Marshmallow contain anti-inflammatory properties that soothe irritated membranes. Together, these properties mean that Marshmallow is a great herb for respiratory wellness. In Russia, the root syrup is sold without prescription by pharmacies to treat minor respiratory ailments.