Nitrofurantoin is an antibiotic that fights bacteria in the body. It is used to treat urinary tract infections caused by certain types of bacteria. Nitrofurantoin is available in different forms and brands, such as Macrobid, Macrodantin, Nitro Macro, and Furadantin. Nitrofurantoin is a widely used and effective medication for urinary tract infections, but it also has some side effects and contraindications. Some people may be allergic to nitrofurantoin or have severe kidney disease, liver problems, or glucose-6-phosphate dehydrogenase (G6PD) deficiency. Nitrofurantoin should not be taken during the last 2 to 4 weeks of pregnancy or by children younger than 1 month old. Because of these factors, nitrofurantoin may not be…