Horsetail (Equisetum Hippocastanum) helps facilitate calcium in the body and has a high silica content. Silica is primarily used to help heal broken bones, arthritis, kidney and urinary tract disorders, hair loss and is considered a natural diuretic and astringent. Guaranteed Potency Silica 500mg 10% Silica. This Horsetail herb is micromilled and water treated to retain its natural nutrients (including flavonoids) to facilitate its utilization by the body. 20246SKU 726899597871