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Head-to-head evidence comparison — which supplement is right for you?
B. coagulans vs Pea Protein: they're closely matched on evidence (5 vs 5.5/10); they work on different things and are often used together, not either/or. Take the 60-second quiz for a pick tailored to your goals.
B. coagulans and Pea Protein are closely matched across evidence, studies, and safety.
Verdict
Too few graded studies
Top outcomes
Verdict
Too few graded studies
Top outcomes
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
20-25 g per serving (aim for about 2-3 g leucine, and about 0.7-1 g protein per lb bodyweight in total daily). The one cited trial that states a dose used 25 g a day. Label servings go up to 40 g, above that dose.
Any time of day
Pea protein isolate (often blended with rice protein)
NOT ESTABLISHED. Single small study; the two protein studies disagree on which amino acids changed, and neither had a placebo arm.
If you take both anyway, take them together. Do not treat this as a way to close the gap between plant and animal protein quality.
4-12 weeks
4 weeks
n/a
n/a
4-12 weeks
Acute-days
Acute
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
Effects of Whey and Pea Protein Supplementation on Post-Eccentric Exercise Muscle Damage: A Randomized Trial.
Nutrients (2020) · Rct · n=92
92 non-athletic men aged 18 to 55 took pea protein, whey protein (0.9 g/kg/day) or water for 5 days after a 90-minute muscle-damaging exercise bout, double-blind for the two proteins.
Resistance training increases myofibrillar protein synthesis in middle-to-older aged adults consuming a typical diet with no influence of protein source: a randomized controlled trial.
The American journal of clinical nutrition (2025) · Rct · n=27
27 adults aged 50 to 70 ate 1.0 g/kg/day of protein for 10 days from a whey-supplemented or a pea-supplemented diet, training one leg every other day.
Real ileal amino acid digestibility of pea protein compared to casein in healthy humans: a randomized trial.
The American journal of clinical nutrition (2022) · Rct · n=15
15 healthy volunteers with a naso-ileal tube ate pea protein or casein in a randomised single-blind trial.
Both B. coagulans and Pea Protein are closely matched — the best choice depends on your specific health goals.
B. coagulans and Pea Protein may work well together: NOT ESTABLISHED. Single small study; the two protein studies disagree on which amino acids changed, and neither had a placebo arm. If you take both anyway, take them together. Do not treat this as a way to close the gap between plant and animal protein quality.
The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.