Fifty breastfed infants aged @-@ days with infantile colic randomly assigned to receive either the synbiotic sachet containing @ billion CFU of : Lactobacillus casei , L.rhamnosus , Streptococcus thermophilus , Bifidobacterium breve , L.acidophilus , B.infantis , L.bulgaricus and fructooligosacharide ( Protexin Healthcare , Somerset , UK ) , or placebo daily for @ days .