Lactobacillus Probiotic for Prevention of UTI

Inclusion Criteria: * pre-menopausal women * present with an acute, uncomplicated, culture confirmed UTI, defined as dysuria, urgency and/or frequency * at least one previous medically diagnosed UTI in past 12 months * using a reliable method of birth control ie: history of tubal ligation, male partner with vasectomy, steroidal contraception, Nuva-Ring, IUD, use of non spermicidal condoms or abstinence. * can provide written consent * can understand and read English Exclusion Criteria: * history of urogenital infection within the past 30 days, including: UTI, medically diagnosed vaginitis * current symptoms suggestive of pyelonephritis (fever\>100.4, flank pain of costovertebral angle tenderness, nausea and vomiting * history of functional or anatomic urologic abnormalities, urologic surgery of chronic urinary catheterization * history of pyelonephritis within the past 6 months * diagnosis of N. gonorrhoeae, C. trachomatis or T. vaginalis on two or more occasions during previous six months * known HIV infection of seropositivity * investigational drug use within 30 days of enrollment visit or current participation in another clinical trial * diabetes, other significant medical problem or intercurrent acute illness that in the Nurse Practitioner's and/or Principal Investigator, would preclude provision of informed consent, make participation in the study unsafe, complicate interpretation of study outcome data, or otherwise interfere with achieving the study objective. At t…