This product is a hard capsule containing brown to brownish particles and powder; Aromatic aroma; Taste bitter and cool. It has the effects of clearing heat and detoxifying, cooling blood and relieving pain, dispelling wind and reducing swelling. Hemorrhoids capsules contain rhubarb, calculated as the total amount of emodin and emodin. Emodin is an orange yellow long needle shaped crystal that crystallizes orange in acetone and yellow in methanol, with a melting point of 256'C ^ 257'C. It has a special reaction with anthraquinone and is almost insoluble in water, soluble in ethanol and alkaline solutions. Rhubarb is an orange yellow plate-like substance, which forms hexagonal or monoclinic crystals in ethanol or benzene, with a melting point of 196C and sublimation. Almost insoluble in water, slightly soluble in cold alcohols, easily soluble in boiling ethanol, soluble in benzene, chloroform, glacial acetic acid, acetone, etc., extremely slightly soluble in petroleum ether.