The product is made of natural hydrous aluminum silicate, washed with water to remove sand, treated with dilute acid and washed with water repeatedly to remove impurities. This product is a kind of white fine powder. After moistening with water, it has a smell similar to clay, and the color is deepened. This product is almost insoluble in water, dilute acid or sodium hydroxide solution.
It can absorb intestinal gases and bacterial toxins, prevent the absorption of toxins in the gastrointestinal tract, and protect the inflamed mucosa. It is used to treat dysentery and food poisoning. External use can protect skin, absorb exudate from wound and prevent bacteria from invading.