Mixed evidenceprobiotic
Bifidobacterium animalis subsp. lactis HN019 for Irregular Digestion
Thought to speed colonic transit and increase stool frequency, though the precise human mechanism is not established.
How strong is the research?
Mixed evidence
No statistically significant difference vs placebo on primary or secondary outcomes overall; post-hoc subgroup of participants with <3 bowel movements/week showed increased weekly bowel movements (+2.0 high dose, +1.7 low dose)
How much to take
1.8–17.2 billion_CFU