Semicarb is the trade name of Montmorillonite. Montmorillonite is a drug used for acute and chronic diarrhea in adults and children. Montmorillonite is a double octahedral crystal structure compound. Montmorillonite bulk is a particulate powder processed from natural montmorillonite with special lamellar structure and non-uniform charge distribution, which has an inhibitory effect on viruses and germs in the digestive tract and the toxins they produce, and protects the mucous membrane of the digestive tract, in addition to having a local coagulation effect. Adults take one sachet each time, three times a day. Children under 1 year old should take one sachet three times a day; 1-2 years old should take 1-2 sachets three times a day; over 2 years old should take 2-3 sachets three times a day. The first dose should be doubled when treating acute diarrhea. To take, pour the product into about 50 ml of warm boiled water and mix well to finish quickly. It should be taken on an empty stomach. If other drugs are needed, they should be separated from it. In summary, montmorillonite dispersion has the ability to cover the mucous membrane of the digestive tract and repair and improve the defense function of the gastrointestinal mucosa against pathogenic factors by binding with each other with mucus glycoproteins. For specific medication, please refer to the clinical situation and be guided by the doctor’s face-to-face consultation.