IBS-D (Diarrhea-predominant)NCT07520422
Bacillus Coagulans Based Product in IBS-Diarrhea
A study testing Probiotic Arm in people with IBS-D (Diarrhea-predominant), run by Bioagile Therapeutics Pvt. Ltd. at 1 site in India.
Trial summary
This is a prospective, randomized, double-blind, placebo-controlled, parallel-group interventional clinical trial designed to evaluate the efficacy and safety of a Bacillus coagulans-based product in adult patients with mild to moderate Irritable Bowel Syndrome with predominant diarrhea (IBS-D), diagnosed according to… Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- IBS-D (Diarrhea-predominant)
- What is being tested?
- Probiotic Arm
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 50 participants
- Where
- 1 siteIndia
- Study dates
- 25 Feb 2023to 25 May 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male or female ≧ 18 - ≦ 65 years old. Signed informed consent. IBS-Diarrhea patient satisfying Rome III criteria.
- Male and female subjects in age range of 18 - 65 years and satisfying the Rome III Criteria for mild to moderate IBS-Diarrhea (IBS-D):
- Recurrent abdominal pain or discomfort, 3 days per month in the last 3 months (12 weeks), associated withmore than 2 of the criteria below. The criteria are fulfilled with symptoms onset 6 months prior to diagnosis Improvement with defecation. Onset associated with a change in stool frequency. Onset associated with a change in stool form (appearance).
- At least two of the following, at least a quarter of occasions or days (25%):
- Altered stool frequency (> 3 bowel movements/day). Altered stool form (loose/watery stools). Altered stool passage (urgency or feeling of incomplete evacuation). Passage of mucus. Bloating or feeling of abdominal distention.
- Exclusion Criteria The patient will be excluded from the study if assessment by the treating investigator showed evidence for cardiovascular, respiratory, urogenital, gastrointestinal/hepatic, hematologic/immunologic, head, ears, eyes, nose and throat, dermatologic/psychiatric, allergy, major surgery or other diseases as revealed by history, physical examination and existing laboratory assessments which may interfere with the administration. Pregnant or lactating women. Females at child bearing age will be excluded unless they are using acceptable birth control measures (i.e. implants, injectables, combined oral contraceptives, some intrauterine contraceptive devices, sexual abstinence or a vasectomized partner) Patients requiring treatments with non-permitted medication (i.e. 5-HT3 antagonist, spasmolytics, anticholinergics, cholestyramine, anti latulence agents, metoclopramide, gastric-anti secretory agents (proton pump inhibitors; for indications other than Gastroesophageal Reflux Disease (GERD)), narcotics, anti-diarrheal drugs, and systemic steroids) Patients requiring the use of antibiotics either in medicine form of natural (e.g.
- grapefruit seed extract, olive leaf extract, oil of oregano, colloidal silver and highly concentrated garlic preparations) Exercise and the use of complementary and alternative medicine for IBS symptoms (i.e. peppermint oil, cognitive behavior therapy) during the study should be maintained at the same level prior to the study. Patients exceeding the treatment limits of permitted medication [(more than 2 days/week during the study period): alginate, antacids and analgesics (limited to acetaminophen ≤ 1000 mg/day, acetylsalicylic acid or NSAIDS no more than 2 tablets/day), (stable dose throughout the study period, anti-depressants (must be on a stable dose > 3 months), fiber supplements, psyllium hydrophilic mucilloid, gastric anti secretory agents (only for GERD patients who are on a stable dose > 3 months; patients should be able to differentiate between IBS and GERD symptoms), acetylsalicylic acid ≤ 325 mg/day, sedatives. Deliverance medications: Mild laxatives only if necessary.]. Any other medications can be used without limits based on the clinical judgment of the treating investigator. Being in another clinical trial 4 weeks before entering the study. Constipated IBS patients. IBS-Diarrhea patients with un-treated lactose intolerance. Regular use of probiotics or using other probiotics during the course of the study.
- Patients allergic to milk or soy products. Patients using catheters. Patients presented with rectal bleeding, weight loss, iron deficiency anemia, nocturnal symptoms and a family history of colorectal cancer, inflammatory bowel disease and celiac spruce. Patients over 50 diagnosed with Irritable Bowel Syndrome who have not had a colonoscopy in the last 5 years. Patients who have allergies for the active ingredients or any of the excipients Patients presented with any immune-compromised condition (such as AIDS, lymphoma, long term corticosteroid treatment) Patients presented with nausea, vomiting and fever.
Who cannot join
None listed.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Prospective, Randomized, Double-blind, Placebo-controlled Parallel-group Clinical Trial to Evaluate the Effects of a Bacillus Coagulans-based Product in Patients With IBS-Diarrhea.
This is a prospective, randomized, double-blind, placebo-controlled, parallel-group interventional clinical trial designed to evaluate the efficacy and safety of a Bacillus coagulans-based product in adult patients with mild to moderate Irritable Bowel Syndrome with predominant diarrhea (IBS-D), diagnosed according to Rome III criteria.
A total of 50 eligible male and female participants aged 18 to 65 years will be randomized in a 1:1 ratio to receive either Bacillus coagulans capsules or matching placebo for 8 weeks. The investigational product contains Bacillus coagulans (10⁶-10⁸ CFU) administered orally twice daily, morning and evening.
Read more
The primary objective is to assess the effect of the study product on IBS-D symptoms, including abdominal pain, gastrointestinal symptom severity, stool consistency, and stool frequency, using validated assessment tools such as Abdominal Pain Visual Analogue Scale (VAS), IBS Symptom Severity Scale (IBS-SSS), and Bristol Stool Form Scale (BSFS). Secondary assessments include changes in hematological parameters and lipid profile biomarkers, along with safety monitoring through vital signs and adverse event reporting.
Participants will attend four study visits: screening, baseline, Week 4, and Week 8. Weekly symptom recordings for abdominal pain and stool characteristics will be documented using participant diary cards throughout the treatment period.
- Conditions
- IBS-D (Diarrhea-predominant)
- Being tested
- Probiotic Arm, Placebo
- Keywords
- IBS-D
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Probiotic ArmDietary supplement
Bacillus Coagulans
PlaceboOther
Placebo
| Study group | Role | What they receive |
|---|---|---|
| Probiotic | Experimental | Bacillus Coagulans (106-108 CFU) Receives: Dietary Supplement: Probiotic Arm |
| Placebo | Placebo comparator | Placebo Receives: Other: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in IBS Symptom Severity Scale (IBS-SSS) score from baseline to Week 8 between intervention and placebo groups
Assessment of overall symptom relief in participants with IBS-D by comparing change in IBS Symptom Severity Scale (IBS-SSS) total score between the Bacillus coagulans group and placebo group over 8 weeks of treatment.
Measured: Baseline to Week 8
Secondary outcomes (3)
Change in stool consistency and stool frequency from baseline to Week 8 between intervention and placebo groups
Assessment of stool consistency using Bristol Stool Form Scale (BSFS) and stool frequency (number of bowel movements per day) to compare changes between treatment groups during the study period.
Measured: Baseline to Week 8
Change in hematological parameters from baseline to Week 8 between intervention and placebo groups
Assessment of changes in hematological laboratory parameters between intervention and placebo groups during the treatment period.
Measured: Baseline to Week 8
Change in lipid profile biomarkers from baseline to Week 8 between intervention and placebo groups
Assessment of changes in lipid profile biomarkers, including serum lipid parameters, between intervention and placebo groups during the study period.
Measured: Baseline to Week 8
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Apr 2026
- Study start25 Feb 2023
- Primary completion25 May 2023
- Study completion25 May 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for IBS-D (Diarrhea-predominant)Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 50 participants (actual)
Sponsor and investigators
- Lead sponsor
- Bioagile Therapeutics Pvt. Ltd.
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Divya C, Study director, BioAgile Therapeutics Private Limited
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07520422
- Sponsor's protocol ID
- BIAG-CSP-034
- Status last verified
- Apr 2026
- First submitted
- 3 Apr 2026
- Last updated
- 9 Apr 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Prospective, Randomized, Double-blind, Placebo-controlled Parallel-group Clinical Trial to Evaluate the Effects of a Bacillus Coagulans-based Product in Patients With IBS-Diarrhea.
- ClinicalTrials.gov ID
- NCT07520422
- Acronym / sponsor ID
- BIAG-CSP-034
- Conditions
- IBS-D (Diarrhea-predominant)
- Keywords
- IBS-D
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 50 participants (actual)
- Lead sponsor
- Bioagile Therapeutics Pvt. Ltd.Industry (pharma, biotech, devices)
- Study start
- 25 Feb 2023 (actual)
- Primary completion
- 25 May 2023 (actual)
- Study completion
- 25 May 2023 (actual)
- First posted
- 9 Apr 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a prospective, randomized, double-blind, placebo-controlled, parallel-group interventional clinical trial designed to evaluate the efficacy and safety of a Bacillus coagulans-based product in adult patients with mild to moderate Irritable Bowel Syndrome with predominant diarrhea (IBS-D), diagnosed according to Rome III criteria.
A total of 50 eligible male and female participants aged 18 to 65 years will be randomized in a 1:1 ratio to receive either Bacillus coagulans capsules or matching placebo for 8 weeks. The investigational product contains Bacillus coagulans (10⁶-10⁸ CFU) administered orally twice daily, morning and evening.
The primary objective is to assess the effect of the study product on IBS-D symptoms, including abdominal pain, gastrointestinal symptom severity, stool consistency, and stool frequency, using validated assessment tools such as Abdominal Pain Visual Analogue Scale (VAS), IBS Symptom Severity Scale (IBS-SSS), and Bristol Stool Form Scale (BSFS). Secondary assessments include changes in hematological parameters and lipid profile biomarkers, along with safety monitoring through vital signs and adverse event reporting.
Participants will attend four study visits: screening, baseline, Week 4, and Week 8. Weekly symptom recordings for abdominal pain and stool characteristics will be documented using participant diary cards throughout the treatment period.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Probiotic | Experimental | Dietary Supplement: Probiotic ArmBacillus Coagulans (106-108 CFU) |
| Placebo | Placebo comparator | Other: PlaceboPlacebo |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (8 listed)
- Male or female ≧ 18 - ≦ 65 years old. Signed informed consent. IBS-Diarrhea patient satisfying Rome III criteria.
- Male and female subjects in age range of 18 - 65 years and satisfying the Rome III Criteria for mild to moderate IBS-Diarrhea (IBS-D):
- Recurrent abdominal pain or discomfort, 3 days per month in the last 3 months (12 weeks), associated withmore than 2 of the criteria below. The criteria are fulfilled with symptoms onset 6 months prior to diagnosis Improvement with defecation. Onset associated with a change in stool frequency. Onset associated with a change in stool form (appearance).
- Altered stool frequency (> 3 bowel movements/day). Altered stool form (loose/watery stools). Altered stool passage (urgency or feeling of incomplete evacuation). Passage of mucus. Bloating or feeling of abdominal distention.
- Exclusion Criteria The patient will be excluded from the study if assessment by the treating investigator showed evidence for cardiovascular, respiratory, urogenital, gastrointestinal/hepatic, hematologic/immunologic, head, ears, eyes, nose and throat, dermatologic/psychiatric, allergy, major surgery or other diseases as revealed by history, physical examination and existing laboratory assessments which may interfere with the administration. Pregnant or lactating women. Females at child bearing age will be excluded unless they are using acceptable birth control measures (i.e. implants, injectables, combined oral contraceptives, some intrauterine contraceptive devices, sexual abstinence or a vasectomized partner) Patients requiring treatments with non-permitted medication (i.e. 5-HT3 antagonist, spasmolytics, anticholinergics, cholestyramine, anti latulence agents, metoclopramide, gastric-anti secretory agents (proton pump inhibitors; for indications other than Gastroesophageal Reflux Disease (GERD)), narcotics, anti-diarrheal drugs, and systemic steroids) Patients requiring the use of antibiotics either in medicine form of natural (e.g.
Key exclusion criteria (0 listed)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Probiotic ArmBacillus Coagulans | Dietary supplement | Probiotic |
| PlaceboPlacebo | Other | Placebo |
Primary outcome
Change in IBS Symptom Severity Scale (IBS-SSS) score from baseline to Week 8 between intervention and placebo groups
Time frame: Baseline to Week 8
Assessment of overall symptom relief in participants with IBS-D by comparing change in IBS Symptom Severity Scale (IBS-SSS) total score between the Bacillus coagulans group and placebo group over 8 weeks of treatment.
3 secondary outcomes
Change in stool consistency and stool frequency from baseline to Week 8 between intervention and placebo groups
Time frame: Baseline to Week 8
Change in hematological parameters from baseline to Week 8 between intervention and placebo groups
Time frame: Baseline to Week 8
Change in lipid profile biomarkers from baseline to Week 8 between intervention and placebo groups
Time frame: Baseline to Week 8
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Apr 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Divya C study director
BioAgile Therapeutics Private Limited
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Probiotic Arm in people with IBS-D (Diarrhea-predominant), run by Bioagile Therapeutics Pvt. Ltd. at 1 site in India.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in India. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in IBS Symptom Severity Scale (IBS-SSS) score from baseline to Week 8 between intervention and placebo groups (time frame: Baseline to Week 8). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Apr 2026.