USA. Marshmallow Root (Althea officinalis), Cut and Sifted, Certified Organic Marshmallow Root is a gentle, mild to neutral tasting herb that can afford great benefit to the intestinal tract. Marshmallow is mucilaginous, and can coat the inside of the digestive tract. It is rich in mucopolysaccharides, which help feed the beneficial bacteria in the gut, promoting and supporting the gut biome. For best results, infuse Marshmallow Root in cold water. This brings out the long-chain sugars that cause the demulcent, or coating effect. This can be helpful for sore throats. Marshmallow is found in our Winter Defense Tea to help during cold and flu season.