Marshmallow root (Althaeae radix)

Published March 2, 1989.
List of German Commission E Monographs (Phytotherapy)


Name of Drug

Althaeae radix, marshmallow root.

Composition of Drug

Marshmallow root consists of the dried root, unpeeled or peeled, of Althaea officinalis L. [Fam. Malvaceae], as well as its preparations in effective dosage.


(a) Irritation of the oral and pharyngeal mucosa and associated dry cough.

(b) Mild inflammation of the gastric mucosa.


None known.

Side Effects

None known.

Interactions with Other Drugs

None known.

Note: The absorption of other drugs taken simultaneously may be delayed.


Unless otherwise prescribed:

Daily dosage:

6 g of root; equivalent preparations. Marshmallow syrup:

Single dose: 10 g. Mode of Administration Cut or ground root for aqueous extracts as well as other galenical preparations for internal use. Marshmallow syrup to be used only for use (a).

Note: Marshmallow syrup: diabetics need to allow for sugar concentration (according to declaration of manufacturer) … percent (equivalent to...bread units).


Alleviates local irritation
Inhibits mucociliary activity
Stimulates phagocytosis

Ed. note: This relates to the need for diabetics to consider and allow for the sugar content of the syrup as stated on the label and is written precisely as it appears in the original German.]. -->