Furadantin, also known as furantoin, is an anti-bacterial, treatment of bacterial infections, belonging to the nitrofuran class of drugs, and sulfonamides, haloperidol, metronidazole, are synthetic anti-bacterial drugs, does not belong to antibiotics. Furadantin has a wide antibacterial range, and has an antibacterial or bactericidal effect on a variety of bacteria, including Gram-staining positive bacteria and Gram-staining negative bacteria, with a complex and unique antibacterial mechanism. Furadantin is quickly absorbed after oral administration, however, it is quickly destroyed in the blood and cannot be used for the treatment of systemic infections. Clinically, it is mainly used for the treatment of sensitive bacterial infections, such as urinary system infections caused by Escherichia coli, enterococci and staphylococci, such as pyelonephritis, cystitis, prostatitis and urethritis. Because the efficacy of the drug is reduced in an alkaline environment, it should not be taken simultaneously with sodium bicarbonate.