A demulcent (derived from the Template:Langx "caress") is a mucilaginous or oleaginous preparation<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> that forms a soothing protective film over a mucous membrane, relieving minor pain and inflammation of the membrane.<ref name="Mandel1987">Template:Cite journal</ref> However, they generally help for less than 30 minutes.<ref>Template:Cite journal</ref>
Demulcents are sometimes referred to as mucoprotective agents. Demulcents such as pectin, glycerin, honey, and syrup are common ingredients in cough mixtures and cough drops.<ref name="pmid13009543">Template:Cite journal</ref>
ExamplesEdit
Natural demulcents include slippery elm, pectin, licorice-root and marsh-mallow.
Synthetic demulcents include methylcellulose, propylene glycol, and glycerin.