Clotrimazole tablets are mainly used to prevent and inhibit oral and esophageal Candida infections in immunosuppressed patients. However, the drug is poorly absorbed orally and adverse reactions are common, so it is now rarely used and only used as a topical drug. The drug may cause gastrointestinal reactions such as nausea, vomiting, abdominal pain and diarrhea, liver damage, and mental abnormalities such as depression, hallucinations, and disorientation. Therefore, it is contraindicated in patients with hepatic insufficiency, granulocytopenia, hypoadrenocorticism, as well as hypersensitivity to the drug. When using the drug, it should be noted that the product is rarely used for internal use due to poor absorption and high toxicity, and should be discontinued immediately if an adverse reaction occurs. If there is a need to use the drug patients, it is recommended to take under the guidance of a doctor, do not unauthorized use of drugs.