 There is accumulating interest in role of lactobacilli in decreasing cry and fuss in infant colic, the condition that affects around 1 of 4-5 infants. The interest for dietary supplementation has been evoked by a line of earlier studies, indicating that infants with colic had an increased number of gas-forming E.coli in the intestines and potential interference between lactobacilli and E.coli. Systematic review of evidence, based on the 6 randomized controlled dietary studies, conducted in Italy, Poland, Australia, Canada, and Finland, has concluded of the decrease of the mean time cry of infant by -55 minutes a day after the 3 weeks dietary course with lactobacilli . In the mentioned studies most commonly used lactobacilli were L. reuteri, however, the effect of combination of L. reuteri with other lactobacilli remains unknown. 