Many people have poor gastrointestinal function and often have diarrhea, especially in summer. It is easy to have diarrhea after eating something slightly unclean or for other reasons. Drugs for diarrhea are mainly divided into the following categories: antibiotics, microecological agents, intestinal mucosal protective agents and astringent antidiarrheal drugs. Scheme 1: Berberine is the first choice for mild diarrhea caused by antibiotic dysentery and Escherichia coli infection. Berberine is poorly absorbed orally, and almost only stays in the gastrointestinal tract, so it is not easy to enter the blood through the gastrointestinal tract, and there are few adverse reactions. Highlight: This medicine is inexpensive and good for tourists to have loose bowels. Medication tip: Patients with severe diarrhea and systemic symptoms should seek medical advice in time. Scheme 2: microecological preparation. These drugs, such as Zhengchangsheng, Peifeikang, Jinshuiqi, Mamiai (for infants) lactic acid bacteria tablets, Miya and so on. It can supplement physiological intestinal probiotics, maintain normal intestinal peristalsis, and relieve symptoms such as diarrhea and constipation. Highlight: These drugs can be used for acute and chronic diarrhea. It is especially suitable for the symptoms of gastrointestinal dysfunction caused by dyspepsia, and can also be used as antibiotics (norfloxacin capsules, etc. ) supplement normal intestinal flora in the later stage of treatment. Medication tip: the water temperature should not be overheated and should not be used with antibiotics. If necessary, it should be used at least two hours apart. Scheme 3: The most commonly used antidiarrheal drug is montmorillonite powder (Smecta, Biqi, Kent Order). This kind of medicine is not absorbed by itself, but adheres to the intestinal wall after oral administration, which slows down intestinal peristalsis and achieves the effect of stopping diarrhea. It can be used for acute and chronic diarrhea caused by various reasons in adults and children. Highlight: This medicine has small side effects and high safety. Medication tip: People with habitual constipation should not use it. Scheme 4: Medicinal carbon tablets can adsorb intestinal bacteria and gas, prevent the absorption of poisons and stop diarrhea. Recommended reason: This drug is especially suitable for toxic diarrhea, and can also be used in combination with other drugs for treating diarrhea. Medication tip: Because this product has adsorption performance, if you are taking other drugs, you should leave this product for more than two hours. In addition, Chinese patent medicines, oral rehydration salts, etc. It can also be used for the treatment or adjuvant treatment of diarrhea with mild symptoms. Commonly used Chinese patent medicines include Huoxiang Zhengqi Pill, Hewei Quanchang Pill, Niujiao Lu Zheng Pill, Hewei Jianpi Pill, Qi-activating and diarrhea-relieving, detumescence and pain-relieving, which have a good effect on dyspepsia, vomiting and diarrhea, and are standing medicines at home.