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ClinicalTrials.gov public records Last synced Oct 20, 2026, 1:20 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 99 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Constipation - Functional Clear all
Completed No phase listed Observational Accepts healthy volunteers

AcuGraph and Digestive Symptoms

NCT00846794
View directory record Official record
Conditions
Digestive Disorders, Irritable Bowel Syndrome, Constipation, Diarrhea
Interventions
Not listed
Lead sponsor
Logan College of Chiropractic
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 15, 2016 · Synced Oct 20, 2026, 1:20 PM EDT
Active, not recruiting Phase 3 Interventional

Neostigmine and Glycopyrrolate by Iontophoresis

NCT06351995
View directory record Official record
Conditions
Spinal Cord Injuries, Constipation, Fecal Incontinence, Neurogenic Bowel
Interventions
Combination of Neostigmine and Glycopyrrolate, I-Box by Dynatronics
Drug · Device
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2024 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tolerability and Functional Assessment of a Novel Children's Synbiotic

NCT04534036
View directory record Official record
Conditions
Constipation, Signs and Symptoms, Digestive Signs and Symptoms, Infrequent or Difficult Evacuation
Interventions
PDS-08, Placebo
Dietary Supplement · Other
Lead sponsor
Seed Health
Industry
Eligibility
3 Years to 17 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 20, 2026, 1:20 PM EDT
Withdrawn Not applicable Interventional

HyGIeaCare Procedure for Chronic Constipation

NCT03335969
View directory record Official record
Conditions
Constipation - Functional
Interventions
colon irrigation
Device
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Oct 20, 2026, 1:20 PM EDT
Not yet recruiting Not applicable Interventional

Trans Auricular Vagal Nerve Stimulation in Patients With IBS-C

NCT07662083
View directory record Official record
Conditions
Irritable Bowel Syndrome (IBS-C)
Interventions
Transcutaneous Auricular Vagus Nerve Stimulation (ta-VNS), Sham Transcutaneous Auricular Vagus Nerve Stimulation
Device
Lead sponsor
West Virginia University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Oct 20, 2026, 1:20 PM EDT
Withdrawn No phase listed Observational

A Non-Interventional Pilot Study to Explore the Role of Gut Flora in IBS

NCT04214470
View directory record Official record
Conditions
Irritable Bowel, Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea, Irritable Bowel Syndrome Mixed, Irritable Bowel Syndrome With Constipation, Irritable Bowel Syndrome Without Diarrhea, Irritable Bowel Syndrome Aggravated, Irritable Bowel Syndrome Characterized by Constipation, Irritable Bowel Syndrome Characterised by Alternating Bowel Habit
Interventions
No intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 20, 2026, 1:20 PM EDT
Terminated Phase 4 Interventional Results available

Prunes for Gastrointestinal Function After Gynecologic Surgery

NCT03523715
View directory record Official record
Conditions
Constipation
Interventions
Prunes, Docusate Sodium
Dietary Supplement · Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older · Female only
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Not applicable Interventional

Mediterranean Diet Intervention to Improve Gastrointestinal Function in Parkinson's Disease a Randomized, Controlled, Clinical Trial

NCT04683900
View directory record Official record
Conditions
Parkinson Disease
Interventions
Standard of care + Mediterranean diet (intervention), Standard of care (control)
Other
Lead sponsor
University of Florida
Other
Eligibility
40 Years to 85 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 12, 2022 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Phase 3 Interventional Results available

Trial of Linaclotide Administered to Patients With Irritable Bowel Syndrome With Constipation

NCT00948818
View directory record Official record
Conditions
Irritable Bowel Syndrome Characterized by Constipation
Interventions
Linaclotide 290 micrograms, Matching placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years and older
Enrollment
803 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
111
States / cities
Birmingham, Alabama • Hueytown, Alabama • Huntsville, Alabama + 94 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2013 · Synced Oct 20, 2026, 1:20 PM EDT
Not listed Not applicable Interventional

Transcutaneous Electrical Acupoint Stimulation (TEAS) for Chronic Constipation

NCT03243955
View directory record Official record
Conditions
Constipation - Functional
Interventions
Verum TEAS, Sham TEAS
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate the Efficacy and Safety of Vibegron Administered Orally for 12 Weeks to Women With Irritable Bowel Syndrome

NCT03806127
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Vibegron, Placebo
Drug
Lead sponsor
Urovant Sciences GmbH
Industry
Eligibility
18 Years to 70 Years · Female only
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
41
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 35 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2021 · Synced Oct 20, 2026, 1:20 PM EDT
Completed No phase listed Observational

Efficacy of Psychological Therapies in Patients With Functional Bowel Disorders

NCT04060121
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome, Constipation
Interventions
Not listed
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 29, 2024 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Not applicable Interventional Results available

Effects of Lubiprostone on Gastrointestinal Transit & pH in Irritable Bowel Syndrome (IBS) With Constipation

NCT01162863
View directory record Official record
Conditions
Irritable Bowel Syndrome, Constipation
Interventions
Lubiprostone, Placebo, Smartpill wireless motility capsule
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 27, 2017 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Not applicable Interventional

Impact of Defecation Posture on Ease of First Bowel Movement Following Posterior Repair

NCT06253689
View directory record Official record
Conditions
Postoperative Constipation, Pelvic Organ Prolapse Vaginal Surgery, Defecation Function
Interventions
Defecation Posture Modification Device
Device
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older · Female only
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
3
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 18, 2025 · Synced Oct 20, 2026, 1:20 PM EDT
Terminated Phase 2 Interventional Results available

A Safety and Efficacy Study of a Range of Linaclotide Doses Administered Orally to Children Ages 7-17 Years, With Irritable Bowel Syndrome With Constipation

NCT02559817
View directory record Official record
Conditions
Irritable Bowel Syndrome With Constipation
Interventions
Linaclotide Dose A, Linaclotide Dose B, Linaclotide Dose C, Linaclotide Approved Adult Dose, Matching Placebo
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
7 Years to 17 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
46
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Anaheim, California + 39 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2020 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Influence of a Delivery System on the Efficacy of a Probiotic Intervention

NCT01399996
View directory record Official record
Conditions
Delayed Transit Time, Irregular Bowel Function
Interventions
Yogurt smoothie without probiotic, Yogurt smoothie with probiotic added post fermentation, Yogurt smoothie with probiotic added pre-fermentation, A capsule containing the probiotic
Dietary Supplement
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 40 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Not applicable Interventional Results available

Utility of an Animated Bowel Biofeedback Training Routine to Improve Bowel Function in Individuals With SCI

NCT02406859
View directory record Official record
Conditions
Spinal Cord Injury, Constipation, Fecal Incontinence, Neurogenic Bowel
Interventions
Bowel Biofeedback, Anorectal Manometry
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 17, 2021 · Synced Oct 20, 2026, 1:20 PM EDT
Not listed Phase 2Phase 3 Interventional Accepts healthy volunteers

Multistrain Probiotic for Functional Constipation

NCT01618617
View directory record Official record
Conditions
Functional Constipation
Interventions
High dose Multistrain probiotic, 100 billion cfu/day, Low dose Multistrain probiotic, 15 billion cfu/day
Dietary Supplement
Lead sponsor
Renew Life Formulas Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 30, 2012 · Synced Oct 20, 2026, 1:20 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Preop Laxatives in Robotic Urologic Surgery

NCT05805436
View directory record Official record
Conditions
Prostate Cancer, Kidney Cancer, Constipation
Interventions
Polyethylene Glycol 3350
Drug
Lead sponsor
Chad R. Tracy
Other
Eligibility
30 Years to 100 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Oct 20, 2026, 1:20 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Mechano-physiological Approach to Anorectal Function

NCT00219518
View directory record Official record
Conditions
Constipation
Interventions
defecography
Procedure
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 25, 2018 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Phase 4 Interventional Results available

Effects of Lubiprostone on Gastric Function in Patients With Chronic Idiopathic Constipation

NCT01460225
View directory record Official record
Conditions
Chronic Idiopathic Constipation
Interventions
lubiprostone
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 13, 2018 · Synced Oct 20, 2026, 1:20 PM EDT
Completed Phase 2 Interventional Results available

A Trial for New Treatment of Adult Participants With Irritable Bowel Syndrome

NCT03721107
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Blautix, Placebo
Biological · Other
Lead sponsor
4D pharma plc
Industry
Eligibility
18 Years to 70 Years
Enrollment
366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
24
States / cities
Huntsville, Alabama • Phoenix, Arizona • North Hollywood, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2022 · Synced Oct 20, 2026, 1:20 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Weizmannia (Bacillus) Coagulans JBI-YZ6.3 on Gut Health and Fecal Microbiome Changes

NCT07388264
View directory record Official record
Conditions
Gastrointestinal Symptoms, Constipation, Gut Health, Gastrointestinal Function
Interventions
Weizmannia (Bacillus) coagulans JBI-YZ6.3, Placebo
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 20, 2026, 1:20 PM EDT
Terminated Phase 2 Interventional Results available

Olorinab in Irritable Bowel Syndrome With Predominant Constipation (IBS-C) and Irritable Bowel Syndrome With Predominant Diarrhea (IBS-D)

NCT04043455
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Olorinab, Placebo
Drug
Lead sponsor
Arena Pharmaceuticals
Industry
Eligibility
18 Years to 70 Years
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
69
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 30, 2025 · Synced Oct 20, 2026, 1:20 PM EDT