Comparative Pharmacology
Head-to-head clinical analysis: DIFICID versus NITROFURANTOIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DIFICID versus NITROFURANTOIN.
DIFICID vs NITROFURANTOIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Fidaxomicin is a macrocyclic antibiotic that inhibits bacterial RNA polymerase, leading to RNA synthesis inhibition and cell death. It is bactericidal against Clostridioides difficile and has minimal systemic absorption.
Nitrofurantoin is reduced by bacterial flavoproteins to reactive intermediates that inactivate or inhibit bacterial ribosomal proteins, DNA, RNA, and metabolic enzymes, leading to bacterial cell death.
200 mg (tablet) orally twice daily for 10 days.
100 mg orally twice daily for 5-7 days (uncomplicated UTI); 50-100 mg orally four times daily for 7 days (symptomatic uncomplicated UTI). Extended-release: 100 mg orally twice daily for 7 days.
None Documented
None Documented
Clinical Note
moderateNitrofurantoin + Norfloxacin
"The therapeutic efficacy of Norfloxacin can be decreased when used in combination with Nitrofurantoin."
Clinical Note
moderateNitrofurantoin + Teriflunomide
"The serum concentration of Teriflunomide can be increased when it is combined with Nitrofurantoin."
Clinical Note
moderateNitrofurantoin + Probenecid
"The serum concentration of Probenecid can be increased when it is combined with Nitrofurantoin."
Clinical Note
moderateNitrofurantoin + Rolapitant
11.7 hours (terminal half-life in healthy subjects); supports twice-daily dosing.
Normal renal function: 20-60 minutes; impaired function: prolonged up to 1-2 hours, clinically significant due to urinary concentration requirement
Fecal (primarily as unchanged drug, ~44% of dose); renal (~1.6% unchanged, <1% as metabolites); biliary (minor).
Renal: ~40% unchanged via glomerular filtration and tubular secretion, biliary/fecal: <1%
Category C
Category D/X
Antibiotic
Antibiotic
"The serum concentration of Rolapitant can be increased when it is combined with Nitrofurantoin."