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Head-to-head evidence comparison — which supplement is right for you?
B. coagulans vs B. lactis (BB-12 / HN019): B. lactis (BB-12 / HN019) has the stronger overall evidence (6 vs 5/10); they're alternatives for improve digestion — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
B. lactis (BB-12 / HN019) wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Too few graded studies
Top outcomes
Verdict
Too few graded studies
Top outcomes
Shared outcomes (1)
Outcomes where both B. coagulans and B. lactis (BB-12 / HN019) have evidence — compare verdict strength side-by-side.
1-2 billion CFU (spores) daily. The IBS-D and gas/bloating trials used 2 x 10^9 CFU/day of MTCC 5856 (LactoSpore); the GBI-30 6086 (BC30) studies used 1 x 10^9 CFU/day.
Any time of day
Tablet or capsule delivering a named strain — MTCC 5856 (LactoSpore) for IBS, GBI-30 6086 (BC30) for the exercise and amino-acid claims
1-10 billion CFU daily for BB-12 (1 billion is enough); 10-20 billion CFU daily for HN019 if transit is the goal
Any time of day
Capsule or sachet standardized to a named strain (BB-12 or HN019)
4-12 weeks
4 weeks
n/a
n/a
2 weeks
4 weeks
n/a
n/a
Outcome-Specific Efficacy of Different Probiotic Strains and Mixtures in Irritable Bowel Syndrome: A Systematic Review and Network Meta-Analysis.
Nutrients (2023) · Meta analysis
B. coagulans MTCC 5856 (SUCRA 96.9%) and B. coagulans Unique IS2 (SUCRA 92.6%) were among the most effective probiotics for improving abdominal pain
Probiotics and synbiotics in chronic constipation in adults: A systematic review and meta-analysis of randomized controlled trials.
Clin Nutr (2022) · Meta analysis
Probiotics increased stool frequency overall (SMD 0.71, 95% CI 0.37-1.04, P<0.00001), with Bifidobacterium lactis driving the effect
The effects of Bacillus coagulans MTCC 5856 on functional gas and bloating in adults: A randomized, double-blind, placebo-controlled study.
Medicine (Baltimore) (2023) · Rct · n=70
GSRS indigestion score fell from 8.91 to 3.06 in the probiotic group versus 9.42 to 8.43 on placebo; between-group P<0.001
Dose-response effect of Bifidobacterium lactis HN019 on whole gut transit time and functional gastrointestinal symptoms in adults.
Scand J Gastroenterol (2011) · Rct · n=100
Whole-gut transit fell 49 to 21 hours on high dose (p<0.001) and 60 to 41 hours on low dose (p=0.01); placebo unchanged
Eight-Week Supplementation With Bifidobacterium lactis HN019 and Functional Constipation: A Randomized Clinical Trial.
JAMA Netw Open (2024) · Rct · n=229
Primary outcome (change in complete spontaneous bowel movements per week): +0.80 with HN019 vs +0.66 placebo — no difference
Effects of 28-day Bifidobacterium animalis subsp. lactis HN019 supplementation on colonic transit time and gastrointestinal symptoms in adults with functional constipation: A double-blind, randomized, placebo-controlled, and dose-ranging trial.
Gut Microbes (2018) · Rct · n=228
No significant differences vs placebo in the primary outcome (colonic transit time) or any secondary outcome
B. lactis (BB-12 / HN019) has a higher evidence score (6/10 vs 5/10) and wins in 2 of 3 categories.
For improve digestion, B. lactis (BB-12 / HN019) has a higher relevance score (68 vs 58).
No documented interaction was found in the data searched. This does not establish that this exact combination is safe.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.