Support healthy function of the urinary system with Horsetail liquid extract from Herb Pharm. We prepare our Horsetail Extract from fresh (undried) Equisetum spp. plants which are Sustainably Wildcrafted during the spring in their native habitat. To assure optimal extraction of Horsetail's bioactive compounds, we hand-harvest only young infertile plants which are then taken directly to our laboratory and promptly extracted while still fresh and succulent.