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Regular drinking of cranberry-lingonberry juice concentrate reduced recurrent urinary tract infections in women

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 QUESTION: Does regular drinking of cranberry-lingonberry juice concentrate or Lactobacillus GG drink reduce recurrence of urinary tract infections (UTIs) in women?

Design

Randomised {allocation concealed}*, blinded (outcome assessor), controlled trial with 12 months of follow up.

Setting

Student health service at the University of Oulu and occupational health centre for the staff of Oulu University Hospital, Finland.

Patients

150 women (mean age 30 y) who had a UTI caused by Escherichia coli (≥105 colony forming units [cfu]/ml in clean voided midstream urine) and were not taking any antimicrobial prophylaxis. Follow up at 12 months was 91%.

Intervention

50 women were allocated to receive 50 ml of cranberry-lingonberry juice concentrate (7.5 g cranberry concentrate and 1.7 g lingonberry concentrate in 50 ml of water with no added sugars) once a day for 6 months, and were advised to prepare a drinkable juice by …

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