Drugs that regulate gastrointestinal flora include: Lactobacillus tablets, Bacillus licheniformis live bacterial capsules, Bifidobacterium bifidum triple live bacterial capsules, Bifidobacterium bifidum quadruple live bacterial tablets, Saccharomyces boulardii bulk, Bacillus coagulans live bacterial tablets, and so on. 1. Lactobacillin Tablets: Lactobacillin Tablets can regulate intestinal flora, promote gastric secretion, indications for dyspepsia, enteritis and so on. Adverse reactions are not clear, it should be noted that lactobacillin, lactose, galactose, dairy products allergy is prohibited. 2. Bacillus licheniformis Live Bacteria Capsules: It can promote the bacteria such as bacillus, bifidobacteria, etc. It has antagonistic effect on some pathogenic microorganisms, and can regulate the intestinal flora, with the indications of chronic enteritis and bacterial-induced diarrhea, etc. It should be noted that overdose can cause constipation. It should be noted that constipation can be seen in overdose, and it is forbidden for those who are allergic to this product. 3.Bifidobacterium Triple Live Bacteria Capsule: It is a compound preparation, the main components of which are Bifidobacterium longum, Lactobacillus acidophilus and Enterococcus faecalis, which can directly supplement the normal physiological bacteria in the human body and regulate the balance of intestinal flora. Note that it is forbidden for those who are allergic to this product. 4.Bacillus coagulans tablets: treating diarrhea and other diseases caused by intestinal flora imbalance. Note that it is forbidden for those who are allergic to microecological agents. Patients should use the drug under the guidance of the doctor, the dosage should follow the doctor’s instructions, the emergence of adverse reactions to communicate with the doctor in a timely manner, to avoid the emergence of serious consequences.