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CTRI Number  CTRI/2025/01/079362 [Registered on: 24/01/2025] Trial Registered Prospectively
Last Modified On: 06/04/2026
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Nutraceutical 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   A Study to assess the Effect of the Bio-K+ Probiotic Capsules (VL-BK-02) in Adults with Functional Constipation 
Scientific Title of Study   A Randomized, Double-Blind, Placebo-Controlled, Parallel Design Clinical Study to assess the Effect of the Bio-K+ Probiotic Capsules (VL-BK-02) in Adults with Functional Constipation 
Trial Acronym  nil 
Secondary IDs if Any
Modification(s)  
Secondary ID  Identifier 
KE/240401/BK/FC Version No: 2 Date: 14th August, 2025  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Sanjay Vaze 
Designation  Sr.Manager-Clinical Development 
Affiliation  Vedic Lifesciences Pvt Ltd 
Address  Vedic Lifesciences Pvt Ltd 118 B Morya House off New Link Road Andheri West Mumbai Mumbai (Suburban)

Mumbai (Suburban)
MAHARASHTRA
400053
India 
Phone  8655670964  
Fax    
Email  sanjay.v@vediclifesciences.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sanjay Vaze 
Designation  Sr.Manager-Clinical Development 
Affiliation  Vedic Lifesciences Pvt Ltd 
Address  Vedic Lifesciences Pvt Ltd 118 B Morya House off New Link Road Andheri West Mumbai Mumbai (Suburban)


MAHARASHTRA
400053
India 
Phone  8655670964  
Fax    
Email  sanjay.v@vediclifesciences.com  
 
Details of Contact Person
Public Query
 
Name  Rushikesh Londhe 
Designation  Clinical Project Lead-Opertion 
Affiliation  Vedic Lifesciences Pvt Ltd 
Address  Vedic Lifesciences Pvt Ltd 118 B Morya House off New Link Road Andheri West Mumbai Mumbai (Suburban)

Mumbai (Suburban)
MAHARASHTRA
400053
India 
Phone  8655737996  
Fax    
Email  rushikesh.l@vediclifesciences.com  
 
Source of Monetary or Material Support  
Vedic Lifesciences Pvt. Ltd. 118-B, Morya House, off New Link Road, Andheri West Mumbai –400053, Maharashtra, India 
 
Primary Sponsor  
Name  Vedic Lifesciences Pvt. Ltd 
Address  Vedic Lifesciences Pvt Ltd 118 B Morya House off New Link Road Andheri West Mumbai Mumbai (Suburban) MAHARASHTRA 400053 India 
Type of Sponsor  Contract research organization 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study
Modification(s)  
No of Sites = 6  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Pramod Katare  AK Superspeciality Clinic,  AK Superspeciality Clinic, Unit 208, 2nd Floor, Commercial Building (Kul Scapes), Tukaram Nagar, Near Reliance Mart, Kharadi Pune, Maharashtra, India
Pune
MAHARASHTRA 
8830793201

drkatareps@gmail.com 
DrAnand Patel  Anand Multispeciality Hospital  Anand Multispeciality Hospital, B Tower, sundervan complex, Gorwa Refinery Rd, near Gorwa, beside IOCL Petrol pump, Gorwa, Vadodara, Gujarat 390016
Vadodara
GUJARAT 
9825576663

amhbaroda@gmail.com 
Dr Dilip Kadam  Care Multispecialty Hospital  Care Multispecialty Hospital, Kolte Arcade, Pune- Nagar Road,Wagholi Pune-412207, Maharashtra, India.
Pune
MAHARASHTRA 
7066115411

drdilipnkadam@gmail.com 
Dr Mahesh Mahadik  GASTRO HUB Hospital  GASTRO HUB Hospital, Royal Radiance, Wakad- Bhosari BRTS Rd, Survey No. 18, Next to spot 18, Rahatani, Pimpri-Chinchwad, Pune, Maharashtra 411027
Pune
MAHARASHTRA 
9890819432

maheshkood@gmail.com 
Dr Rohit Singh  Krishna Hospital,  Krishna Hospital,Amara Chitalpur Road, Akhri Bypass, Varanasi-221005, Uttar Pradesh, India
Varanasi
UTTAR PRADESH 
7991956262

iambigr@yahoo.co.in 
Dr Suhas Dhole  Lifeline multispecialty Hospital  Lifeline multispecialty Hospital Nano Homes, Bhondve Chowk Ravet Pune, Maharashtra, India.
Pune
MAHARASHTRA 
9822590576

Dhole.vmgmc@gmail.com 
 
Details of Ethics Committee
Modification(s)  
No of Ethics Committees= 8  
Name of Committee  Approval Status 
Altezza Instutional Ethics Committee  Approved 
Anand Institutional Ethics Committee  Approved 
Care Multispeciality Hospital Institutional Ethics Committee  Approved 
Central Independent Ethics Committee  Approved 
Central Independent Ethics Committee-CIEC  Approved 
Krishna Ethics Committee K Krishna Hospital  Approved 
Signus Hospital Ethics Committee  Approved 
Supreme Independent Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K928||Other specified diseases of the digestive system,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Placebo  One capsule to be taken orally once day before breakfast For 84 days 
Intervention  VL-BK-02  One capsule to be taken orally once day before breakfast For 84 Days 
 
Inclusion Criteria
Modification(s)  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1.Participants agreed to the signed and dated informed consent form.
2.Male and female individuals of age between 18 to 60 years.
3.Individuals who meet Rome IV diagnostic criteria for functional constipation as indicated by the criteria fulfilled for the last 3 months with symptoms onset at least 6 months prior to diagnosis:
i.Must include two or more of the following criteria:
a)Fewer than three SBMs per week
b) Straining during more than ¼ (25%) of defecations
c) Lumpy or hard stools (Bristol Stool Form Scale 1-2) more than ¼ (25%) of defecations
d) Sensation of incomplete evacuation more than ¼ (25%) of defecations
e) Sensation of anorectal obstruction/ blockage more than ¼ (25%) of defecations
f) Manual maneuvers to facilitate more than ¼ (25%) of defecations (e.g., digital evacuation, support of the pelvic floor)
ii.Loose stools are rarely present without the use of laxatives
iii. Insufficient criteria for irritable bowel syndrome
4. Individuals willing to comply with all study procedures and availability for the duration of the study as per the protocol.
5. Individuals willing to maintain the same dietary and physical activity practices throughout the study period.
6. Individuals with fewer than three CSBMs per week.





 
 
ExclusionCriteria 
Details  1. Individuals with well-known, organic cause of constipation (Polyps, hemorrhoids, etc.)
2. Individuals with anorectal pathology.
3. Individuals with history of gastrointestinal surgery including appendisectomy.
4. Individuals with any alarming symptoms (i.e. rectal bleeding, weight loss, jaundice) as judged by the Investigator.
5.Individuals with concurrent chronic GI pathology (e.g. IBD, cystic fibrosis, short gut, celiac disease, frequent diarrhea without laxative).
6.Current pharmacological treatment related to constipation (e.g. prosecretory agents, antidepressants, antispasmodics, enterokinetic)
7. Individuals consuming dietary treatment (e.g. synbiotics, herbal extracts, fibers) or taking other therapies for treating constipation (e.g. cognitive behavior therapy, acupuncture, biofeedback, complementary and alternative Medicine) within 1 month prior to screening.
8. Use of antibiotics within 1 month prior to screening.
9. Use of products containing probiotics, prebiotics, postbiotics, within 1 month prior to screening.
10. Opioids-induced constipation.
11. Regular use of any drug or dietary supplement known to cause constipation (e.g. iron, opioids, sucralfate, misoprostol, 5-HT- antagonists, antacids with magnesium, calcium or aluminum, antidiarrheal medication, anticholinergic agents, calcium supplements, calcium channel blockers, tricyclic antidepressants or NSAIDs) within 1 month prior to screening.
12. Immuno-compromised participants.
13. Participants on immunosuppressive agents (e.g. heart or kidney transplant, chemotherapy agents, oral prednisolone)
14. History of cancer .
15. Individuals with known history of diabetes mellitus and are on medication for the same.
19. Psychiatric or behavioral disorders as judged by the Investigator
20. Individuals with known food allergy.
21. Individuals with eating disorders (e.g., anorexia, bulimia)
22. Pregnancy or lactation
23. Known allergic reactions to any components of the probiotics or placebo.
24. Individuals participating in other interventional study within 90 days prior to screening.
25. Individuals with a history of alcohol or drug abuse based on medical history, physical examination, or the Investigators clinical judgment.
26. Current Smokers.
27. Individuals with more than 14 SBMs per week.



 
 
Method of Generating Random Sequence   Stratified block randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To assess the effect of VL-BK-02 on changes in the frequency of Complete Spontaneous Bowel Movements (CSBMs) per week   from baseline to the end of study visit. 
 
Secondary Outcome
Modification(s)  
Outcome  TimePoints 
To assess the effect of Investigational product (IP) in comparison to baseline & placebo on stool consistency as assessed by Bristol Stool Form Scale (BSFS) per week from baseline to the end of study visit.  from baseline to the end of study visit 
To assess the effect of Investigational product (IP) in comparison Constipation symptoms by using Participant Assessment of Constipation Symptoms (PAC-SYM)  from baseline to day 14, day 28, day 42, day 56, day 70 & day 84. 
To assess the effect of Investigational product (IP) in comparison Quality of life by using Participant Assessment of Constipation QoL (PAC-QoL)  from baseline to day 14, day 28, day 42, day 56, day 70 & day 84. 
To assess the effect of Investigational product (IP) in comparison to Percentage responders defined as the number of participants with an increase by 1 or more frequencies of SBM with no sensation of incomplete evacuation  from baseline to the end of intervention 
To assess the effect of Investigational product (IP) in comparison Gut microbiome (alpha & beta diversity)   from baseline to end of intervention 
To assess the effect of Investigational product (IP) in comparison Difference in the usage of rescue medication   throughout the study duration as compared to placebo 
 
Target Sample Size   Total Sample Size="126"
Sample Size from India="126" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 3/ Phase 4 
Date of First Enrollment (India)   25/01/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Closed to Recruitment of Participants 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   The present study is a randomized, placebo-controlled, double-blind, parallel-group clinical study designed to assess the effects of IP in individuals with Functional constipation as compared to a placebo. Approximately 205 individuals aged between 18 and 60 years will be screened. Considering a screen failure of 20%, approximately 164 individuals will be randomized in a ratio of 1:1 to receive either the active or placebo. The study will have at least 126 completed participants i.e. 63 partcipants in each study arm after accounting for a dropout/withdrawal rate of 23% at the end of the study. The intervention duration for all the study participants will be 56 days with follow up of upto 84 days. The study flow chart given below indicates the time points at which safety and efficacy assessments will be conducted 
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