Blessed Thistle herb (Cnici benedicti herba)

Published October 15, 1987.
List of German Commission E Monographs (Phytotherapy)


Name of Drug

Cnici benedicti herba, blessed thistle herb, holy thistle herb.

Composition of Drug

Blessed thistle herb consists of the dried leaves and upper stems, including inflorescence, of Cnicus benedictus L. [Fam. Asteraceae], as well as preparations thereof in effective dosage.

The herb contains bitter principles, such as cnicin.


Loss of appetite, dyspepsia.


Allergies to blessed thistle and other composites.

Side Effects

Allergic reactions are possible.

Interactions with Other Drugs

None known.


Unless otherwise prescribed:

Mean daily dosage:

4 - 6 g of herb; equivalent preparations accordingly. Mode of Administration Comminuted herb and dried extracts for teas; bitter-tasting galenical preparations for internal use.


Stimulation of the secretion of saliva and gastric juices.