Marshmallow root

Silver· human data

Also known as: Althaea officinalis

A demulcent herb for digestive and throat comfort, with mainly traditional support.

Marshmallow root, like slippery elm, is high in soothing mucilage and is used traditionally for irritated throats, coughs and digestive-tract comfort.

The demulcent mechanism is reasonable, but rigorous clinical trials are scarce and its reputation rests mainly on long traditional use. It is generally well tolerated and, being a fibre, may slow absorption of medicines taken alongside it.

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Written and reviewed by Mathew Beale, MSc Biotechnology, University of Reading.

Last reviewed: