Xi’an Biosep- Horsetail P.E. [Source] the whole herb of Equisetum arvense L. [Specification] Silica 7％ 10％ [Analysis Method] UV [Usage] It can allay the fever, reduce the concentration of the blood, and relieve a cough and diuresis. It also can cure the haematemesis, the illness of having the blood in one's stool, discordance of the catamenia, cough, asthma and the gonorrhea.