Probiotics for constipation
Research has shown that probiotics may decrease gut transit time — that is, the time taken with food to pass as bowel movements – up to 12.4 hours and increase movements of the bowel by 1.3 per week.
Strains of Bifidobacterium lactis seem most effective in improving gut transit time, stool consistency and frequency, and flatulence. The researchers advise precaution when interpreting these outcomes, however, as there may be bias in a few studies.