In September 2019 researchers from Croatia published their review on the role of probiotics in the treatment of the most common gastrointestinal disorders, ie infantile colic, constipation, functional abdominal pain and irritable bowel syndrome. There are many factors that can cause gastrointestinal disorders but the importance of gut bacteria (microbiome) has repeatedly been stated. Current research shows a possible role of probiotics in treating these disorders and there is strong evidence that Lactobacillus reuteri is an effective treatment of infantile colic in breastfed infants. There is also limited evidence that Lactobacillus rhamnosus GG may be beneficial in the treatment of irritable bowel syndrome and some evidence that L reuteri is of benefit in abdominal pain.
Hojsak I. Probiotics in Functional Gastrointestinal Disorders. Adv Exp Med Biol. 2019;1125:121-137