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Herbs & Cultures
Image of Field horsetail

Europe · Herb · № 70

Equisetum arvense

Region
Europe
Origin
Throughout the northern hemisphere: Europe, Asia and North America. Equisetum arvense
Other names
Paardenstaart
2 traditionsImage: botany08 · CC BY 4.0

Herb · Europe

Field horsetail

Equisetum arvense

Rich in silica; traditionally used as a diuretic, for urinary infections and for hair, nails and connective tissue. Good clinical evidence is lacking.

Safety notes

Contains an enzyme that destroys vitamin B1 (thiamine); do not use long term. Avoid with kidney or heart problems, in pregnancy or with diuretics. Do not confuse with toxic marsh horsetail.

Cautions by tradition (1)
  • Haudenosaunee (Iroquois) medicine: Not for long periods; not with kidney or heart disease.

Preparation

The dried green stems as tea or decoction. No dosage is given here.

Use in traditions

Horsetails are an ancient plant group that existed in the age of the dinosaurs. Ody also notes that the rough stems were once used to scour pewter.

Applications

Use by tradition

How different herbal traditions describe this herb. Amounts are traditional guidelines checked for obvious errors; they are not medical advice. For poisonous plants no dosage is given on purpose.

Herbal medicine worldwide

Attributed effects

Astringent, stops bleeding, diuretic, anti-inflammatory, repairs tissue.

Preparation and amount

Juice 5–10 ml 3 times a day for urinary complaints and lung damage; decoction (simmer at least 3 hours) for heavy menstruation, stomach ulcers, inflamed urinary tract, prostate problems, acne, eczema; powder paste on leg ulcers and wounds; mouthwash; capsules.