Treatment of bacterial cystitis with a single dose of trimethoprim, co-trimoxazole or amoxycillin compared with a course of trimethoprim.

A single dose of trimethoprim, co-trimoxazole or amoxycillin was compared with a five-day course of trimethoprim for the treatment of bacterial cystitis in general practice. The respective cure rates were 80%, 80%, 65% and 86%. These differences were not statistically significant. Side effects were minimal. Single dose therapy is recommended as the treatment of choice for bacterial cystitis in domiciliary practice.