Horsetail is well known for its mineral content, specifically silica, which is concentrated in the shoots of the plant. Solaray® Guaranteed Potency Horsetail provides a consistent level of 10% silica and is extracted from the shoots of the plant.

Ingredients: Horsetail (Equisteum arvense) (aerial) 100 mg, Horsetail (Equisetum arvense) (aerial extract) (Guaranteed 40 mg [10%] silica) 400 mg