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ClinicalTrials.gov public records Last synced Oct 20, 2026, 9:50 AM EDT

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Showing 121–144 of 405 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Constipation Clear all
Completed Phase 3 Interventional Results available

The Plecanatide Irritable Bowel Syndrome With Constipation Safety and Efficacy Study (IBS-C)

NCT02387359
View directory record Official record
Conditions
Irritable Bowel Syndrome Characterized by Constipation
Interventions
Plecanatide, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,054 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
155
States / cities
Athens, Alabama • Birmingham, Alabama • Dothan, Alabama + 142 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

Second Plecanatide Study In Irritable Bowel Syndrome With Constipation (IBS-C)

NCT02493452
View directory record Official record
Conditions
Irritable Bowel Syndrome Characterized by Constipation
Interventions
Plecanatide, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 85 Years
Enrollment
1,135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
191
States / cities
Birmingham, Alabama • Guntersville, Alabama • Huntsville, Alabama + 157 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2019 · Synced Oct 20, 2026, 9:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

ISE to Support Constipation Management

NCT02977858
View directory record Official record
Conditions
Constipation
Interventions
Educational practice for HCPs,Dissemination only, Educational practice for HCPs,Spaced Education
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 6, 2020 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 1 Interventional

A Lactation Study in Women Who Are Breastfeeding or Pumping and Are Receiving Linaclotide Therapeutically

NCT02220348
View directory record Official record
Conditions
Breast Feeding, Constipation, Irritable Bowel Syndrome
Interventions
linaclotide
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Iowa City, Iowa • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 19, 2020 · Synced Oct 20, 2026, 9:50 AM EDT
Not listed Phase 2Phase 3 Interventional

A Study of the Safety and Effectiveness of DDP733 in Treating IBS With Constipation in Females

NCT00547469
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
DDP733
Drug
Lead sponsor
Dynogen Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
62
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 53 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2008 · Synced Oct 20, 2026, 9:50 AM EDT
Terminated Phase 4 Interventional Results available

Naloxegol for the Prevention of Constipation in Postoperative Spinal Surgery Patients

NCT02946580
View directory record Official record
Conditions
Constipation
Interventions
MOVANTIK™ (naloxegol), Sugar Pill
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Intestinal Microecology in Chronic Constipation

NCT00934479
View directory record Official record
Conditions
Other Constipation, Irritable Bowel Syndrome
Interventions
Lubiprostone
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 17, 2013 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Not applicable Interventional

The Effect of Psyllium and Wheat Bran on Body Weight in People With Parkinson's Disease and Constipation Symptoms

NCT04829760
View directory record Official record
Conditions
Parkinson Disease
Interventions
Psyllium, Coarse wheat bran, Maltodextrin
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
40 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 20, 2024 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 2 Interventional

Study Of Alvimopan Drug For Treatment Of Constipation Due To Prescription Pain Medication

NCT00101998
View directory record Official record
Conditions
Constipation, Bowel Dysfunction
Interventions
alvimopan, placebo
Drug
Lead sponsor
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years and older
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
69
States / cities
Tucson, Arizona • Hot Springs, Arkansas • Duarte, California + 58 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

Extension to Study on Efficacy and Safety of Linzagolix for the Treatment of Endometriosis-associated Pain (EDELWEISS 6)

NCT04335591
View directory record Official record
Conditions
Endometriosis
Interventions
75 mg linzagolix tablet, 200 mg linzagolix tablet, Placebo tablet to match 75 mg linzagolix tablet, Placebo tablet to match 200 mg linzagolix tablet, Add-back capsule (E2 1 mg / NETA 0.5 mg), Placebo capsule to match Add-back capsule
Drug
Lead sponsor
Kissei Pharmaceutical Co., Ltd.
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
356 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
8
States / cities
Dothan, Alabama • Homestead, Florida • Tampa, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2025 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 2 Interventional Results available

Study of Elobixibat (A3309) in Patients With Chronic Idiopathic Constipation

NCT01007123
View directory record Official record
Conditions
Constipation, Chronic Constipation
Interventions
A3309
Drug
Lead sponsor
Albireo
Industry
Eligibility
20 Years to 80 Years
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
44
States / cities
Huntsville, Alabama • Chandler, Arizona • Phoenix, Arizona + 40 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of a Low Dose, Oral, Liquid Iron Supplement on Restoring Inadequate Blood Iron to Normal Levels

NCT05257343
View directory record Official record
Conditions
Iron Deficiency (Without Anemia)
Interventions
Liquid Placebo Supplementation, Liquid Iron Supplement (Blood Builder ®)
Dietary Supplement
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
18 Years and older · Female only
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 30, 2023 · Synced Oct 20, 2026, 9:50 AM EDT
Enrolling by invitation No phase listed Observational

Enabling Microbiomics- Driven Personalized Nutrition

NCT06657001
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD), Irritable Bowel Syndrome (IBS), Celiac Disease, Diarrhea, Constipation, Microbiome, Crohn's Disease, UC - Ulcerative Colitis, Microscopic Colitis, Functional Dyspepsia
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
4,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 2 Interventional

BLI801 Laxative in Constipated Adults

NCT01301781
View directory record Official record
Conditions
Constipation
Interventions
BLI801, Placebo
Drug
Lead sponsor
Braintree Laboratories
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
4
States / cities
Anaheim, California • Jupiter, Florida • New Smyrna Beach, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2012 · Synced Oct 20, 2026, 9:50 AM EDT
Recruiting Phase 2 Interventional

Pyridostigmine for the Treatment of Constipation in Parkinson Disease

NCT05603715
View directory record Official record
Conditions
Parkinson Disease, Constipation
Interventions
Pyridostigmine Bromide
Drug
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 3 Interventional Results available

Open-label Extension (OLE) Study of Plecanatide for Chronic Idiopathic Constipation (CIC)

NCT01919697
View directory record Official record
Conditions
Chronic Idiopathic Constipation
Interventions
Plecanatide
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 81 Years
Enrollment
2,370 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
211
States / cities
Birmingham, Alabama • Dothan, Alabama • Gulf Shores, Alabama + 160 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2019 · Synced Oct 20, 2026, 9:50 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Radicle GI HealthTM VNB: A Study Assessing the Impact of Health and Wellness Products on Constipation and Related Health Outcomes

NCT07713810
View directory record Official record
Conditions
Constipation
Interventions
Placebo GI Health Control, Active GI Health Product
Dietary Supplement
Lead sponsor
Radicle Science
Industry
Eligibility
21 Years to 105 Years
Enrollment
550 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Del Mar, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 20, 2026, 9:50 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Investigation of Cortico-Rectal Pathways in Healthy Subjects and Constipated Patients

NCT01300897
View directory record Official record
Conditions
Healthy Volunteers, Constipation
Interventions
Cortical Evoked Potentials, Transcranial motor evoked potentials, Translumbosacral motor evoked potentials
Procedure
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 85 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2018
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 23, 2018 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 2 Interventional

A Safety and Efficacy Evaluation of BLI801 Laxative in Constipated Adults

NCT01687985
View directory record Official record
Conditions
Constipation
Interventions
BLI801 laxative - low dose, BLI801 laxative - high dose
Drug
Lead sponsor
Braintree Laboratories
Industry
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
4
States / cities
Anaheim, California • Brockton, Massachusetts • Chattanooga, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2014 · Synced Oct 20, 2026, 9:50 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Biomarkers for Intestinal Permeability in Patients With Constipation

NCT02246647
View directory record Official record
Conditions
Intestinal Diseases, Irritable Bowel Syndrome, Constipation
Interventions
Permeability measurement, Esophagogastroduodenoscopy, Flexible sigmoidoscopy
Diagnostic Test · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 20, 2026, 9:50 AM EDT
Recruiting Phase 2 Interventional

A Study of Brenipatide (LY3537031) in Participants With Irritable Bowel Syndrome-Constipation (IBS-C)

NCT07545772
View directory record Official record
Conditions
Irritable Bowel Syndrome, Constipation
Interventions
LY3537031, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 75 Years
Enrollment
342 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
14
States / cities
Mesa, Arizona • Anaheim, California • Lancaster, California + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2026 · Synced Oct 20, 2026, 9:50 AM EDT
Terminated Not applicable Interventional Results available

Lubiprostone as a Treatment for Constipation in Parkinson's Disease

NCT00669461
View directory record Official record
Conditions
Constipation, Parkinson's Disease
Interventions
Lubiprostone
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
50 Years to 85 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Dec 30, 2016 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Evaluate the Effect of ConcenTrace Trace Mineral Drops on Gut Health

NCT06122571
View directory record Official record
Conditions
Gut Health, Bowel Movements, Constipation, Bloating
Interventions
ConcenTrace
Other
Lead sponsor
Trace Minerals
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Aug 23, 2024 · Synced Oct 20, 2026, 9:50 AM EDT
Completed Phase 3 Interventional

Evaluation of Clinical Equivalence Between Two Lubiprostone Products in the Treatment of Chronic Idiopathic Constipation

NCT01674530
View directory record Official record
Conditions
Chronic Idiopathic Constipation
Interventions
Lubiprostone, Placebo
Drug
Lead sponsor
Dr. Reddy's Laboratories Limited
Industry
Eligibility
18 Years and older
Enrollment
909 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
93
States / cities
Birmingham, Alabama • Dothan, Alabama • Huntsville, Alabama + 71 more
Source: ClinicalTrials.gov public record
Updated Apr 3, 2014 · Synced Oct 20, 2026, 9:50 AM EDT