Table 1 Admissibility criteria for the cranberry extract for prevention of recurrent urinary tract infections trial

Inclusion Criteria

Sexually active healthy women

Aged 18 years and older

Recent history of recurrent urinary tract infections (UTIs)^a

  ≥ 2 UTIs in the past 6 months and/or

  ≥ 3 UTIs in the past 12 months

No consumption of cranberry juice, polyphenol or antioxidant supplements in the last 2 weeks

Exclusion Criteria

Pregnancy

History of anatomical urogenital anomalies, urogenital tract surgery

History of acute or chronic renal failure, nephrolithiasis

History of intestinal diseases causing malabsorption

Anticoagulant medication in the last month

Known allergy or intolerance to cranberry