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

Intervention 50 women were allocated to receive 50 ml of cranberrylingonberry 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 adding 200 ml of water but no sweetener to the concentrate. 50 women were allocated to 100 ml of Lactobacillus GG drink (4 × 10 cfu of Lactobacillus GG/100 ml) 5 days per week for 1 year, and 50 were allocated to no juice (control). Both drinks were commercially available.