Berberine, also known as berberine, is a quaternary ammonium alkaloid isolated from the traditional Chinese medicine Huanglian, and is not an antibiotic. It is not an antibiotic. At present, berberine is usually added to medicines, such as common berberine hydrochloride tablets, which have significant antibacterial effects but are not antibiotics. They are mainly used for the treatment of diarrhea and abdominal discomfort caused by gastrointestinal infections, such as bacterial dysentery and gastroenteritis. When using drugs containing safranin, care should be taken to avoid using it together with drugs containing tannin, so as not to affect the efficacy of the drug. Some patients may also experience adverse reactions such as nausea and vomiting, which usually disappear after stopping the drug. In addition, it is generally not recommended for use in patients with hemolytic anemia and glucose-6-phosphate dehydrogenase deficiency. The use of the drug is recommended under the guidance of a professional doctor, do not blindly use the drug on your own to avoid adverse effects.