Cranesbill

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Common name:

• Spotted Cranebill

Botanical Names

Botanical name:

• Geranium maculatum

Parts used and where grown

Cranesbill originated in North America and is sometimes grown ornamentally in a variety of flower colors. The root is primarily used in herbal medicine, but the above-ground part of the plant has also been used traditionally by herbalists.

Health Concerns

 

Cranesbill has been used in connection with the following conditions (refer to the individual health concern for complete information):

Rating	Health Concerns
	Canker sores Crohn's disease Diarrhea Menorrhagia
Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or the herb or supplement has little scientific support and/or minimal health benefit.

Traditional Use

Historical or traditional use (may or may not be supported by scientific studies)

The Blackfoot Indians of North America used the root of cranesbill and closely related plants to stop bleeding.¹ Cranesbill has also been used by other indigenous tribes of North America to treat diarrhea.

Active Constituents

Active constituents

Cranesbill is high in tannins, which may account for its anti-diarrheal activity.² Little scientific research exists to clarify cranesbill's constituents and actions.

Dosage

How much is usually taken?

A tea can be prepared by boiling 1-2 teaspoons (5-10 grams) of the root for ten to fifteen minutes in 2 cups (500 ml) of water.³ People can drink three (750 ml) or more cups per day. Cranesbill tincture (approximately 1/2 teaspoon or 3 ml) three times per day is also commonly used, although generally in combination with other herbs, for diarrhea. Dried, powdered cranesbill root is sometimes used in an herbal combination to treat Crohn's disease; however, there are no scientific studies to support this combination.

Side Effects

Are there any side effects or interactions?

Cranesbill tea should not be used for more than two to three consecutive weeks. Due to the high tannin content, some people may develop an upset stomach after using cranesbill.

At the time of writing, there were no well-known drug interactions with cranesbill.

References

1. Tilford GL. Edible and Medicinal Plants of the West. Missoula, MT: Mountain Press Publishing Company, 1997, 42-3.
2. Duke JA. CRC Handbook of Medicinal Plants. Boca Raton, FL: CRC Press, 1985, 209.
3. Hoffman D. The Herbal Handbook. Rochester, VT: Healing Arts Press, 1988, 43.

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Last Review: 01-21-2009

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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires February 2010.

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