Demulcent: An agent that forms a soothing, protective film when administered onto a mucous membrane surface. For example, mucilage and oils are demulcents that can relieve irritation of the bowel lining.

What is demulcent used for?

Demulcents are used to lubricate and protect the alimentary mucous membrane, but the term is usually applied only to those agents that affect the buccal, pharyngeal, esophageal, and gastric mucosa.

Do demulcents give symptomatic relief how?

They are rich in carbohydrate mucilage made up of complex polysaccharide molecules. Thus, they become slimy and gummy when they come in contact with water. This physical property has a clear and direct action on the lining of the intestines, where it soothes and reduces irritation by direct contact.