High Quality Content by WIKIPEDIA articles! Nitrofurantoin is an antibiotic which is marketed under the following brand names; Furadantin, Macrobid, Macrodantin, Nitrofur Mac, Nitro Macro, Nifty-SR, Martifur-MR, Martifur-100 (in India), Urantoin, and Uvamin (in Middle East). It is usually used in treating urinary tract infection. Like many other drugs, it is often used against E. coli.