24% of US adults
say digestive health is the most important aspect of their overall health, per a 2022 IFIC survey on gut health and probiotics.
International Food Information Council, 2022Bacillus subtilis HU58 is the lead active here, studied most for a balanced gut microbiome. 6 human studies on Bacillus subtilis HU58 back this formula, each one cited. Who it fits: for everyone, adults.
Verified by IngredientMDThe panel on the left is the one we evaluated, line by line.
All 5 actives checked against the clinical evidence: dose, form, and what the research actually shows.
Doses, ratios, and how the ingredients work together. That assessment is the verdict above: "Backed by human trials".
The verdict is public and identical whether or not a brand pays. A formula that does not clear the bar gets nothing.
Read by the engine against 2.1 million data points from clinical trials, PubMed and more than a hundred vetted sources. No individual reviewer is named or implied.
Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.
24% of US adults
say digestive health is the most important aspect of their overall health, per a 2022 IFIC survey on gut health and probiotics.
International Food Information Council, 202252% of US adults
believe common digestive symptoms such as bloating and abdominal pain are just a normal part of life, per a 2026 Harris Poll conducted for Oshi Health.
The Harris Poll for Oshi Health, 202657.6%
During 2017 to 2018, 57.6% of US adults aged 20 and over reported using a dietary supplement in the past 30 days.
CDC National Center for Health Statistics58% of the recommended fiber intake
was reached on average by US consumers, who ate 8.1 grams of fiber per 1,000 calories in 2017 to 2018 versus the 14 grams recommended, per USDA Economic Research Service analysis of federal food consumption survey data.
USDA Economic Research Service, 202340% of US adults
aged 18 and over report they experience bloating at least a few times a month, with 5% saying they experience it daily, per a 2023 Ipsos poll conducted for MDVIP.
Ipsos, 202334% of US adults
aged 18 and over report they experience abdominal discomfort or pain at least a few times per month, with women about twice as likely as men to report it several times weekly, per a 2023 Ipsos poll conducted for MDVIP.
Ipsos, 202328% of US adults
aged 18 and over say that digestive issues impact the quality of their life, a share that rises to about a third among those aged 18 to 44, per a 2023 Ipsos poll conducted for MDVIP.
Ipsos, 202332% of US adults
say they actively try to consume probiotics, and among them 60% try to do so at least once a day, per a 2022 IFIC survey on gut health.
International Food Information Council, 202259 to 66 days
was the median time it took adults to make a new daily health habit automatic across the studies a 2024 review pooled, with individuals ranging from 4 to 335 days.
Systematic review and meta-analysis, 202461% to 74%
About 61 to 74 percent of adults refilling a long-term medicine on their own stopped within a year, versus 33 to 44 percent on one set pickup day.
Cohort study, 2015Randomised trial, 2025
Pre-sleep casein taken with probiotic strains was followed by higher anaerobic power and lower-body strength measures than casein alone.
Journal of the International Society of Sports NutritionRandomised trial, 2023
In this randomised double-blind study the authors reported improvement in functional gas and bloating scores with the probiotic compared with placebo. Note that the strain studied was Bacillus coagulans MTCC 5856, a different strain from GBI-30, 6086, so it is species-level rather than strain-level evidence.
MedicineRandomised trial, 2019
The authors reported fewer self-reported upper respiratory and gastrointestinal tract symptoms in the group receiving the Bacillus coagulans strain than in the control group over the study period.
Food research internationalRandomised trial, 2024
Oral spore-based Bacillus supplementation altered post-prandial expression of gastrointestinal-associated mRNA in blood. These are gene-expression markers rather than clinical outcomes, and Bacillus clausii was one strain inside a multi-strain product.
BiomedicinesRandomised trial, 2026
A spore-forming probiotic blend was reported to change bowel habit measures and self-reported physical well-being in adults with infrequent bowel movements. Bacillus subtilis is named as a blend component rather than tested alone.
PLoS OneSystematic review, 2024
Across randomised trials the review examined whether probiotic supplementation changed intestinal permeability measures in adults carrying excess body weight, and reported inconsistent findings across studies and markers.
Advances in NutritionOpen-label trial, 2023
In adults with a mild acute illness, ongoing use of a five-strain spore-forming Bacillus product was reported to improve the measured clinical course compared with the comparison condition. Because the product held five strains, the contribution of any single strain including Bacillus clausii cannot be separated out.
NutrientsRandomised trial, 2020
In female collegiate athletes doing offseason resistance training, Bacillus subtilis supplementation was reported to affect body composition measures, with the authors framing the findings as preliminary.
Journal of Strength and Conditioning ResearchRandomised trial, 2025
A high-dose multi-strain Bacillus probiotic was linked to a 25 percent drop in antibiotic use, a 2 day shorter treatment period, in the children studied.
Scientific ReportsRandomised trial, 2026
In 60 adults on dual antibiotics, adding a probiotic blend that includes Bacillus subtilis was linked to shifts in gut microbiota and symptom scores over 8 weeks.
Tissue Engineering and Regenerative MedicineRandomised trial, 2026
In a trial of 78 adults, probiotics including Bacillus subtilis were linked to smaller shifts in oral microbiota over a 14 day antibiotic course than antibiotics alone.
Frontiers in Cellular and Infection MicrobiologyPopulation figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.
Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.
Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.
In an 8-week randomized placebo-controlled trial of 100 healthy adults with functional bloating, Bacillus subtilis ATCC 122264 did not change overall gas-symptom scores, and in post-hoc analyses among women, belching severity decreased by week 4 and flatulence by week 8.
Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.
Five ingredients, from each one's own page.
Digestive changes with spore probiotics generally show up over one to three weeks of daily use. Since the species is transient, effects track continued intake.
Most people describe digestive changes across the first two to four weeks. Each dose works fresh, because the organism passes through rather than settling in.
Of daily doses is where digestive comfort shifts. The spore has to germinate before anything happens, so day one is quiet by design.
Digestive changes usually show up across one to three weeks of daily use. Spores germinate fresh with each dose, so it builds steadily rather than landing all at once.
Digestive changes usually land within a week or two of daily doses. Around a course of antibiotics the point is what does not happen, which is harder to date.
How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.
It is a capsule, so the amount per serving is fixed and travels without measuring.
Put an earned verification on your own product page.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This record is not medical advice. Always consult your healthcare provider before starting any supplement regimen.