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Drugs and Health Products

Monograph: Avens

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Date: 2008-01-15


Geum urbanum (USDA 2008)

Proper Name(s)

Geum urbanum L. (Rosaceae) ( USDA 2008 )

Common Name(s)

Source Material

Route Of Administration


Dosage Form(s)

Those suited to the allowable route(s) of administration. This monograph is not intended to include food-like dosage forms such as bars, chewing gums or beverages.

Use(s) or Purpose(s)

Statement(s) to the effect of:



Preparation: Dry, Powder, Decoction & Infusion + All Non-Standardised Extracts

Dose(s): 1 - 12 Grams per day, dried herb tops or dried root

See Appendix 1 for examples of appropriate dosage preparations and frequencies of use, according to cited references. The purpose of Appendix 1 is to provide guidance to industry.

Duration of use

No statement is required

Risk Information

Statement(s) to the effect of:

Caution(s) and Warning(s):
  • Consult a health care practitioner if symptoms persist.
  • Consult a health care practitioner if symptoms worsen.
  • Consult a health care practitioner prior to use if you are pregnant or breastfeeding

No statement is required

Known Adverse Reaction(s):
No statement is required

Non-medicinal ingredients

Must be chosen from the current Natural Health Products Ingredients Database and must meet the limitations outlined in the database.


  • The finished product specifications must be established in accordance with the requirements described in the NHPD Quality of Natural Health Products Guide.
  • The medicinal ingredient must comply with the requirements outlined in the Natural Health Products Ingredient Database (NHPID).

References cited

  • BHP 1983: British Herbal Pharmacopoeia. Cowling (GB): British Herbal Medical Association; 1983.
  • Grieve M. 1971. A Modern Herbal, Volume 1. New York (NY): Dover Publications [Reprint of 1931 Harcourt, Brace & Company publication].
  • McGuffin M, Kartesz JT, Leung AY, Tucker AO, editors. 2000. Herbs of Commerce, 2nd edition. Austin(TX): American Herbal Products Association.
  • USDA 2008: ARS, National Genetic Resources Program. Germplasm Resources Information Network (GRIN). National Germplasm Resources Laboratory, Beltsville (MD). [Accessed 2008-01-21]. Available at
  • Wichtl M, editor. Herbal Drugs and Phytopharmaceuticals: A Handbook for Practice on a Scientific Basis, 3rd edition. Stuttgart (D): Medpharm GmbH Scientific Publishers; 2004.
  • Williamson EM, Evans FJ, Wren RC. Potter's New Cyclopaedia of Botanical Drugs and Preparations. Saffron Walden (GB): C.W. Daniel Company Limited; 1988.

References reviewed

  • Barnes J, Anderson LA, Philipson JD. 2007. Herbal Medicines, 3rd edition. London (GB): Pharmaceutical Press.
  • Felter HW, Lloyd JU. King's American Dispensatory, Volume 1, 18th edition. Sandy (OR): Eclectic Medical Publications; 1983 [Reprint of 1898 original].
  • Gruenwald J, Brendler T, Jaenicke C, editors. PDR for Herbal Medicines, 1st edition. Montvale (NJ): Medical Economics Company; 1998.

Appendix 1: Examples of appropriate dosage preparations and frequencies of use

Aerial parts:


  • 1-4 g dried powder, 3 times per day (BHP 1983)
  • 1-2 g (15-30 grains) dried powder, per day (Grieve 1971 [1931])


1-4 g dried aerial parts, 3 times per day (BHP 1983)


  • 1-4 g dried equivalent, 3 times per day
    (1:1, 25% alcohol, 1-4 ml) (BHP 1983)
  • 3.7 g (1 drachm) dried equivalent, per day
    (1:1, 3.7 ml) (Grieve 1971 [1931])



1-2 g (15-30 grains) dried powder, per day (Grieve 1971 [1931])


1.8-3.6 g (0.5-1 teaspoon) dried root, several times per day (Wichtl 2004)


1.9-3.7 g (0.5-1 drachm) dried equivalent, per day
(1:1, 1.9-3.7 ml) (Grieve 1971 [1931])