In less severe cases, one of the following may be given: Doxycycline 100 mg orally every 12 hours for 5 to 7 days Ampicillin 500 to 750 mg orally every 6 hours for 5 to 7 days Amoxicillin 500 mg orally every 6 hours for 5 to 7 days Patient isolation is not required, but urine must be handled and disposed of carefully.