Probiotics of no use in almost all GI conditions

US experts say there is 'no good evidence' probiotics work for human gastrointestinal conditions apart from for preventing necrotising enterocolitis in premature newborns
Reuters Health
Probiotics

Probiotics have not been shown to be safe and effective for most gastrointestinal conditions, according to publications from the American Gastroenterological Association (AGA).

Early studies in animals showed that probiotics modulate the immune system, provide resistance to invasion by pathogens, improve intestinal barrier function, lower the pH of the gut and modulate intestinal motility and pain perception, the authors note.