Soapwort root, Red (Saponariae rubrae radix)

Published April 27, 1989.
List of German Commission E Monographs (Phytotherapy)

Rote Seifenwurzel

Name of Drug

Saponariae rubrae radix, red soapwort root.

Composition of Drug

Red soapwort root consists of the dried root, rhizome, and runner of Saponaria officinalis L. [Fam. Caryophyllaceae], as well as its preparations in effective dosage. The root contains saponins.


Catarrhs of the upper respiratory tract.


None known.

Side Effects

In rare cases, stomach irritation.

Interactions with Other Drugs

None known.


Unless otherwise prescribed:

Daily dosage:

1.5 g root or equivalent preparations. Mode of Administration Comminuted herb for teas and other galenical preparations for internal use.


Expectorant by irritation of the gastric mucosa
Cytotoxic, in high concentrations.