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Horsetail herb (Equiseti herba)

Published September 18, 1986.
List of German Commission E Monographs (Phytotherapy)


Name of Drug

Equiseti herba, horsetail herb.

Composition of Drug

Horsetail consists of the fresh or dried, green, sterile stems of Equisetum arvense L. [Fam. Equisetaceae], as well as its preparations in effective dosage.

The herb contains silicic acid and flavonoids.



Post-traumatic and static edema. Irrigation therapy for bacterial and inflammatory diseases of the lower urinary tract and renal gravel. External:

Supportive treatment for poorly healing wounds. Contraindications None known.

Note: No irrigation therapy in case of edema due to impaired heart and kidney function.

Side Effects

None known.

Interactions with Other Drugs

None known.


Unless otherwise prescribed:

Average daily dosage:

6 g of herb; equivalent preparations. External use in compresses:

10 g of herb to 1 liter of water. Mode of Administration Internal:

Comminuted herb for infusions and other galenical preparations for oral administration. For irrigation therapy, ensure an abundant fluid intake. External:

Comminuted herb for decoctions and other galenical preparations. Action Mild diuretic.