Product No. P08015

Horsetail is found throughout the temperate climate zones of the Northern Hemisphere, including Asia, North America, and Europe. Seven of the twenty-five known species are British, the most common being Equisetum arvense. The Horsetails belong to a class of plants called ‘Equisetaceae’, and are similar to the fern family, germinating in the same way.

The epidermis contains so much silica that bunches of the stem have been sold for polishing metal and used to be imported from Holland for the purpose, hence the popular name of ‘dutch rushes’.

Primary chemical constituents of horsetail include flavonoids (15 different types), bitter principle, alkaloids (equisetin, nicotine, palustrine, palustrinine), silica, calcium, potassium, manganese, magnesium, sulphur, phytosterols, and tannin. Horsetail is rich in silicic acid and silicates, which provide approximately 2-3% elemental silicon.

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