Stinging Nettle root (Urticae radix)

Published September 18, 1986; Revised March 2, 1989, March 13, 1990, and January 17, 1991.
List of German Commission E Monographs (Phytotherapy)


Name of Drug

Urticae radix, nettle root, stinging nettle root.

Composition of Drug

Stinging nettle root consists of the underground parts of Urtica dioica L., U. urens L. and/or their hybrids [Fam. Urticaceae] as well as preparations from nettle root at an effective dose.

The drug contains ß-sitosterol in free forms and as glycosides, as well as scopoletin.


Difficulty in urination in benign prostatic hyperplasia stages 1 and 2.


None known.

Side Effects

Occasionally, mild gastrointestinal upsets.

Interactions with Other Drugs

None known.


Unless otherwise prescribed:

Daily dose:

4 - 6 g of drug; equivalent preparations. Mode of Administration Comminuted drug for infusions as well as other galenical preparations for oral use.


Increase of urinary volume
Increase of maximum urinary flow
Reduction of residual urine.

Note: This drug only relieves the symptoms of an enlarged prostate without reducing the enlargement. Please consult a physician at regular intervals.