NCT04231162

Brief Summary

This prospective, two-arm (parallel groups), double-blind, randomized, placebo-controlled, multi-center clinical trial will investigate the effects of an 8-week Bifidobacterium lactis HN019 supplementation on stool frequency and on other constipation parameters in adults suffering from functional constipation according to ROME III criteria. The hypothesis is that Bifidobacterium lactis HN019 is superior, in comparison with a placebo, for the increase of stool frequency of at least 1 stool per week.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
224

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Sep 2020

Geographic Reach
1 country

4 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

January 8, 2020

Completed
10 days until next milestone

First Posted

Study publicly available on registry

January 18, 2020

Completed
8 months until next milestone

Study Start

First participant enrolled

September 16, 2020

Completed
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 21, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 21, 2022

Completed
Last Updated

February 23, 2022

Status Verified

February 1, 2022

Enrollment Period

1.3 years

First QC Date

January 8, 2020

Last Update Submit

February 22, 2022

Conditions

Keywords

Stool frequencyProbioticLactic bacteriaBifidobacteriaTransitQuality of lifeConstipation symptomsDiet supplement

Outcome Measures

Primary Outcomes (1)

  • Change from baseline of stool frequency

    Complete Spontaneous Bowel movement / week (reported in daily diaries)

    Baseline (Day-15 to Day-9 and Day-7 to Day-1) and Intervention (Day1 to Day28 and Day30 to Day57)

Secondary Outcomes (7)

  • Stool consistency

    Baseline (Day-15 to Day-9 and Day-7 to Day-1) and Intervention (Day1 to Day28 and Day30 to Day57)

  • Degree of straining

    Baseline (Day-15 to Day-9 and Day-7 to Day-1) and Intervention (Day 1 to Day 28 and Day 30 to D57)

  • Abdominal pain severity

    Baseline (Day-15 to Day-9 and Day-7 to Day-1) and Intervention (Day1 to Day28 and Day30 to Day57)

  • Bloating severity

    Baseline (Day-15 to Day-9 and Day-7 to Day-1) and Intervention (Day1 to Day28 and Day30 to Day57)

  • Constipation symptoms assessment by the participant

    Day 0 (baseline, Visit 3), Day 29 (Visit 4, 4 weeks) and Day 58 (Visit 5, 8 weeks)

  • +2 more secondary outcomes

Study Arms (2)

probiotic powder, Bifidobacterium lactis

EXPERIMENTAL
Dietary Supplement: Active product

Placebo

PLACEBO COMPARATOR
Dietary Supplement: Control product

Interventions

Active productDIETARY_SUPPLEMENT

Bifidobacterium lactis HN019 (probiotic powder). One capsule to consume orally with still water (not sparkling) at room temperature once a day at least 15 minutes before breakfast time.

probiotic powder, Bifidobacterium lactis
Control productDIETARY_SUPPLEMENT

Placebo. One capsule to consume orally with still water (not sparkling) at room temperature once a day at least 15 minutes before breakfast time.

Placebo

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Free-living females and males of age 18 to 70 years (limits included),
  • Body mass index between 18.5 and 34.9 kg/m² (limits included),
  • Meets the ROME III criteria for functional constipation as follows (criteria fulfilled for the last 3 months with symptom onset at least 6 months prior to diagnosis):
  • a. Must meet 2 or more of the following criteria : i. Straining during at least 25% of defecations, ii. Lumpy or hard stools in at least 25% of defecations, iii. Sensation of incomplete evacuation for at least 25% of defecations, iv. Sensation of anorectal obstruction/blockage for at least 25% of defecations, v. Manual maneuvers to facilitate at least 25% of defecations (e.g., digital evacuation, support of the pelvis floor), vi. Fewer than three defecations per week, b. Loose stools are rarely present without the use of laxatives, c. Insufficient criteria for Irritable Bowel Syndrome (IBS),
  • Self-reported bowel movement frequency up to 3 stools per week for at least the last 6 months,
  • Participants who agree to maintain their usual level of activity throughout the trial period,
  • Participants who agree to maintain their usual dietary habits and level of exercise etc; i.e. maintain their usual life-style throughout the trial period,
  • Participants who agree not to consume probiotics (except for investigational products), prebiotics, symbiotic, fermented milk, and/or yogurt throughout the trial period,
  • Females of child-bearing potential who agree to use medically approved methods for birth control those including condoms with spermicides, hormonal contraceptives (estrogen and/or progestin products; either oral, intrauterine or epidermal) or intrauterine device with copper. The contraceptive method should have been in place for at least 3 cycles before the beginning of the study, and should not be modified during the study. Postmenopausal women with or without hormone replacement therapy who have been applying the estrogenic or estrogenic/progestin treatment for at least 3 months before the beginning of the study and who agree not to change the treatment during the study,
  • Ability of the participant (in the investigator's opinion) to comprehend the full nature and purpose of the study including possible risks and side effects,
  • Consent to participate in the study and willing to comply with the protocol and study restrictions,
  • Covered by Health Insurance System and / or in compliance with the recommendations of National Law in force relating to research involving the human person,
  • Participants who agree to be registered on the national file of the volunteers participating in biomedical research.
  • Hematological, serum and urine parameters within the normal ranges, or not clinically-relevant. Nonpregnant females, as indicated by negative pregnancy test,
  • to 3 Complete Spontaneous Bowel Movements (CSBM) over the 7 days, per daily diary log between Visit 1 and Visit 2 (Day-15 to Day-9),
  • +5 more criteria

You may not qualify if:

  • Having hypersensitivity or history of allergy to one of the study products,
  • Suffering from a metabolic disorder (diabetes, uncontrolled thyroidal condition) and/or from severe chronic disease (cancer, renal failure, HIV, immunodeficiency, hepatic or biliary disorders, arthritis, uncontrolled cardiac disease) or from a disease found to be inconsistent with the conduct of the study by the investigator,
  • Major gastrointestinal complication (e.g. Crohn's disease, ulcer, IBS-Mixed, IBS-constipation, IBS-Diarrhea, Celiac disease),
  • Lactose-intolerants who consume non-lactose-free dairy products. e.g. regular milk, ice-cream. i.e. Lactose-intolerants who cannot manage their condition (those who manage their intolerance, i.e. who don't consume any product which contain lactose, could be included in the study).
  • Prior abdominal surgery (e.g. gastric by-pass, gastrectomy, gastric band, visceral surgery…) that, in the opinion of the investigator, may present a risk for the participant or confound study results,
  • Current pharmacological treatment related to constipation (e.g., prosecretory agents, antibiotics, antidepressants, antispasmodics, enterokinetic), dietary treatment of constipation (e.g. probiotics, prebiotics, symbiotic, herbal extracts, fibers), or other constipation treatments (e.g. cognitive behavior therapy, acupuncture, biofeedback) or within 1 month before screening,
  • Laxative/suppository use (≥1/month) or laxative/suppository use within 48 hours of screening (rescue medications - e.g., laxatives, suppositories and rescue procedures- e.g., enemas, allowed for intolerable symptoms during study),
  • Daily consumption of probiotics, prebiotics, symbiotic, fermented milk, and/or yogurt containing probiotics within 2 weeks prior to screening,
  • Use of any drug or dietary supplement during at least 7 consecutive days known to cause constipation (e.g. iron, opioids, sucralfate, misoprostol, 5-HT#-antagonists, antacids with magnesium, calcium or aluminium, antidiarrheal medication, anticholinergic agents, calcium supplements, calcium channel blockers, tricyclic antidepressants or NSAIDs) within 1 month before screening,
  • Clinically significant underlying systemic illness that may preclude the participant's ability to complete the trial or that may confound the study outcomes (e.g. bowel cancer, prostate cancer, terminal illness),
  • Systemic steroid use within 1 month before screening,
  • Eating disorder (e.g., anorexia, bulimia, etc.),
  • Having a lifestyle deemed incompatible with the study according to the investigator e.g., specific diet (vegetarian, vegan, hypocaloric), intense physical activity \> 10 hours / week, etc,
  • Self-declare history of alcohol abuse (for females: \>3 drinks on any single day and \>7 drinks per week; for males: \>4 drinks on any single day and \>14 drinks per week),
  • Self-declare use of illicit drugs,
  • +6 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (4)

CEN

Dijon, 21000, France

Location

Eurofins Optimed

Gières, 38610, France

Location

Institut Pasteur de Lille

Lille, 59019, France

Location

Biofortis

Saint-Herblain, 44800, France

Location

Related Publications (1)

  • Ala-Jaakkola R, Forssten SD, Cheng J, Griffon F, Metreau I, Sturm Y, Lecerf JM, Donazzolo Y, Junnila J, Nordlund A, Hibberd A, Ouwehand AC, Ibarra A. Effect of an 8-Week Bifidobacterium lactis HN019 Supplementation on Functional Constipation: A Multi-Center, Triple-Blind, Randomized, Placebo-Controlled Trial. Mol Nutr Food Res. 2025 Sep;69(17):e70081. doi: 10.1002/mnfr.70081. Epub 2025 May 5.

MeSH Terms

Interventions

Control Groups

Intervention Hierarchy (Ancestors)

Epidemiologic Research DesignEpidemiologic MethodsInvestigative TechniquesResearch DesignMethods

Study Officials

  • Isabelle Metreau, MD

    BioFortis

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

January 8, 2020

First Posted

January 18, 2020

Study Start

September 16, 2020

Primary Completion

January 21, 2022

Study Completion

January 21, 2022

Last Updated

February 23, 2022

Record last verified: 2022-02

Data Sharing

IPD Sharing
Will not share

Locations