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Head-to-head evidence comparison — which supplement is right for you?
B. coagulans vs L. plantarum 299v: B. coagulans has the stronger overall evidence (5 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. coagulans wins 1 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 L. plantarum 299v 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 x 10^9 CFU (1 billion) daily taken WITH the iron-containing meal is sufficient for the iron effect — in the dual-isotope crossover trial 10^9 was significant (28.6% vs 18.5%, p<0.028) while 10^10 was NOT (29.1% vs 20.1%, p=0.080). The freeze-dried capsule and IBS trials used 1 x 10^10 CFU daily, and the pregnancy trial used 1 x 10^10 CFU twice daily (2 x 10^10 CFU/day)
With meals
Freeze-dried capsule standardized to 299v (DSM 9843)
4-12 weeks
4 weeks
n/a
n/a
Immediate, per meal
12-25 weeks
4 weeks
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
A Systematic Review and Meta-Analysis on the Effects of Probiotic Species on Iron Absorption and Iron Status.
Nutrients (2019) · Meta analysis
Pooled SMD 0.55 (95% CI 0.22-0.88, p=0.001) for increased iron absorption across 8 studies
The effect of Lactiplantibacillus plantarum 299v together with a low dose of iron on iron status in healthy pregnant women: A randomized clinical trial.
Acta Obstet Gynecol Scand (2021) · Rct · n=326
Iron deficiency at week 35: 59% vs 78% (p=0.017); iron-deficiency anaemia 7.4% vs 21% (p=0.023)
Efficacy of Probiotics in Irritable Bowel Syndrome: Systematic Review and Meta-analysis.
Gastroenterology (2023) · Meta analysis
For global IBS symptoms, certainty of evidence was LOW for this strain (moderate only for Escherichia strains)
B. coagulans has a higher evidence score (5/10 vs 5/10) and wins in 1 of 3 categories.
For improve digestion, B. coagulans has a higher relevance score (58 vs 50).
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.