The harmlessness of taking furazolidone for 14 days in a row depends on the patient’s personal situation and cannot be clearly judged. In clinical practice, the use of furazolidone is usually about 10 days, the longer the use of time, the higher the likelihood of harm, so the patient’s condition should be assessed in a timely manner, the patient under the supervision of a doctor to follow the instructions of the medication can be. Adverse reactions such as nausea, headache, vomiting, rash, dizziness, jaundice, asthma, hypoglycemia, polyneuritis, upright hypotension, and hemolytic anemia can occur after taking the drug. When the dose of the drug is too much, mental disorders, polyneuritis and other symptoms can occur, in which case symptomatic supportive treatment such as rehydration, emetic, gastric lavage, and large amounts of water should be given. Furazolidone is a nitrofuran drug that can interfere with the normal metabolism of bacteria, with antibacterial effect, can be used for gastritis caused by Helicobacter pylori, as well as enteritis caused by sensitive bacteria, typhoid fever, bacillary dysentery, cholera, giardia and other diseases. Alcohol should not be consumed before taking the medicine and within 5 days after stopping the medicine, because it will produce disulfiram-like reaction with alcohol, which can cause life-threatening. It is contraindicated in the following cases: newborns and children under 14 years of age; pregnant and lactating women; glucose-6-phosphate dehydrogenase deficiency; hypersensitivity to the drug. If you need to use the drug, please strictly follow the doctor’s instructions under the guidance of the medication, do not self-medication.