Originally used by the Egyptians. Its usage was later adopted by the French. Marshmallow plant, especially the leaves and roots, contains polysaccharides that have antitussive, mucilaginous, and antibacterial properties.
Marshmallow is considered a very safe herb and virtually no side effects have been reported with its use. Marshmallow may, however, cause low blood sugar in some people, so those with low blood sugar should check with a physician or herbalist before using marshmallow as a tea. Because of the way marshmallow coats the stomach, it may affect absorption of other drugs.