Furazolidone should not be used with tricyclic antidepressants, this product is used for infections caused by sensitive bacteria, and should be used as prescribed. Furazolidone commonly used dosage form for tablets, drug instructions pointed out that this product and tricyclic antidepressants (such as promethazine, amitriptyline, chlorpromazine, doxepin, etc.) may cause acute toxic psychosis, should be avoided. Furazolidone has antibacterial effects and is used for bacillary dysentery, cholera, enteritis, paratyphoid fever, typhoid fever, trichomoniasis, and Giardia flagellosis caused by sensitive bacteria. It is also used for sinusitis caused by Helicobacter pylori. Furazolidone adverse reactions include headache, dizziness, nausea, diarrhea, vomiting, drug fever, rash, anal pruritus, upright hypotension, asthma, hypoglycemia, jaundice, hemolytic anemia, pulmonary infiltrates, polyneuritis and other adverse reactions. The drug is contraindicated in people who are allergic to the product, glucose-6-phosphate dehydrogenase deficiency. The drug should be taken under the supervision of a physician.