Pediatric . Be sure to tell your doctor about all medications, vitamins, or herbs you’re taking. These drugs are often used to treat similar conditions.Nitrofurantoin helps kill the bacteria that cause urinary tract infections. Susceptible strains of Escherichia coli, Enterobacter spp, Klebsiella spp, Staphylococcus aureus, and S saprophyticusMacrocrystals (Macrodantin, Furadantin, and equivalents): 50-100 mg PO q6hr for 7 days or for 3 days after obtaining sterile urineMonohydrate/macrocrystals (Macrobid and equivalents): 100 mg PO q12hr for 7 days or for 3 days after obtaining sterile urineLong-term prophylaxis/suppression: 50-100 mg macrocrystals PO HS for up to 12 monthsAvoid for long-term UTI suppression; possible pulmonary toxicity; safer alternatives are availableNot drug of choice in elderly because of unfavorable side-effect profileLoses effectiveness in patients with CrCl <60 mL/min due to inadequate urine concentration (Beers criteria)Monitor renal function; renally excreted; decreased renal function more likely in elderlyMonitor liver function and possible pulmonary reactionsDual release macrocrystals indicated only for patients >12 years for acute UTIs (cystitis) caused by E coli or S saprophyticusAvoid for long-term UTI suppression; possible pulmonary toxicity; safer alternatives are availableLoses effectiveness in patients with CrCl <60 mL/min due to inadequate urine concentration (Beers criteria)Monitor renal function; renally excreted; decreased renal function more likely in elderlyDual release macrocrystals indicated only for patients >12 years for acute UTIs (cystitis) caused by E coli or S saprophyticusSuspected adverse reactions, contact Casper Pharma LLC. Select one or more newsletters to continue. As a result, more of a drug stays in your body for a longer time. Any medical information published on this website is not intended as a substitute for informed medical advice and you should not take any action before consulting with a healthcare professional.© 2004-2020 Healthline Media UK Ltd, Brighton, UK, a Red Ventures Company. Your doctor may start you on a lowered dosage or a different treatment schedule. To find out how this drug might interact with something else you’re taking, talk to your doctor or pharmacist.Examples of drugs that can cause interactions with nitrofurantoin are listed below.Nitrofurantoin oral capsule comes with several warnings.Nitrofurantoin can cause a severe allergic reaction. 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It will only take 2 minutes of your time and we would really appreciate it :) Nitrofurantoin is a prescription drug that comes as an oral capsule and an oral suspension.Nitrofurantoin oral capsule is available as the brand-name drugs Nitrofurantoin oral capsule treats and prevents urinary tract infections that are caused by certain types of bacteria.Nitrofurantoin belongs to a class of drugs called antimicrobials or antibiotics. If you log out, you will be required to enter your username and password the next time you visit. Antacids can reduce the rate and extent by which nitrofurantoin is absorbed in the intestines. However, this medicine will not work for colds, flu, or other virus infections. It may also cause other side effects.The more common side effects of nitrofurantoin can include:If these effects are mild, they may go away within a few days or a couple of weeks. 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