Which antibiotic options are considered short-course therapy for uncomplicated cystitis?

• A. Nitrofurantoin for 5 days
• B. Ciprofloxacin for 14 days
• C. Amoxicillin for 7 days
• D. Doxycycline for 7 days

Answer: (A)

Short-course therapy for uncomplicated cystitis aims to clear the bladder infection with a brief, effective antibiotic course that minimizes side effects and resistance. Nitrofurantoin for five days fits this approach well because it achieves high concentrations in the urine and is particularly effective against common bladder pathogens like E. coli, with ample evidence supporting five days of treatment for uncomplicated cases. It’s specifically intended for lower urinary tract infections and isn’t suitable when a kidney infection or systemic spread is suspected, or when kidney function is significantly impaired since adequate urinary drug levels may not be reached.

The other options don’t align with this short-course, bladder-focused strategy. A fluoroquinolone given for fourteen days is longer than necessary for uncomplicated cystitis and carries higher risks of adverse effects and resistance, so it isn’t preferred as a first-line short course. Amoxicillin tends to be unreliable due to resistance among urinary pathogens, making it an inappropriate choice for a standard uncomplicated case. Doxycycline isn’t a reliable first-line option for typical cystitis pathogens and isn’t considered an appropriate short-course therapy in this context.