Marshmallow have an antitussive effect by reducing oral and pharyngeal irritation. It alleviates dry cough by

• the information of a protective layer on the inflamed or damaged mucosa of the mouth and throat (up to the larynx), and

• increasing the barrier to irritants which reduces the sensitivity of the cough receptors

Since antiquity Marshmallow is considered as a soothing plant for cough. The mucilage contained in the marshmallow enwrap the cough receptors in the throat, alleviate mucosal irritation and thereby reduce the urge to cough.