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ClinicalTrials.gov public records Last synced Oct 21, 2026, 1:32 PM EDT

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Showing 1–24 of 63 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: lactulose Clear all
Completed Phase 1 Interventional

Intestinal Permeability in Response to Treatment in Eosinophilic Esophagitis Patients

NCT01641913
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Absorbable sugars
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 24, 2014 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

2 Regimens of Lactulose for Colonoscopy Preparation in Adults

NCT01887470
View directory record Official record
Conditions
Colonoscopy Preparation
Interventions
Full dose preparation, Split dose preparation
Drug
Lead sponsor
Cumberland Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 1, 2015 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Serum-Derived Bovine Immunoglobulin Protein Isolate in Subjects With Decompensated Cirrhosis With Ascites

NCT02608658
View directory record Official record
Conditions
Cirrhosis of the Liver, Ascites, Spontaneous Bacterial Peritonitis
Interventions
Medical food, EnteraGam (Serum-Derived Bovine Immunoglobulin)
Other
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 70 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 1, 2018 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 1 Interventional

Safety Study of Intravenous 6β-Naltrexol (AIKO-150) in Opioid-Dependent Subjects

NCT00829777
View directory record Official record
Conditions
Opiate Addiction
Interventions
6β-Naltrexol escalating doses from 0.05-0.5 mg IV
Drug
Lead sponsor
California Pacific Medical Center Research Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2009 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Metformin's Effect on Glucagon-induced Glucose Production and Protein Metabolism.

NCT01956929
View directory record Official record
Conditions
Insulin Resistance, Prediabetic State
Interventions
Metformin, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
35 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 1, 2017 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 4 Interventional

Hydrogen Breath Test an Instrument to Predict Rifaximin-Response in Irritable Bowel Syndrome Predominant Diarrhea

NCT03729271
View directory record Official record
Conditions
Irritable Bowel Syndrome, Irritable Bowel Syndrome With Diarrhea
Interventions
Rifaximin, Glucose and lactulose hydrogen breath testing
Drug · Device
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 80 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 2 Interventional Results available

Effect of Galantamine on Inflammation and Cognition

NCT03384784
View directory record Official record
Conditions
HIV Associated Cognitive Motor Complex
Interventions
Galantamine, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
30 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 17, 2024 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 3 Interventional Results available

The Effect of Guanfacine on Delirium in Critically Ill Patients

NCT04578886
View directory record Official record
Conditions
Delirium
Interventions
Guanfacine, Placebo
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Oct 21, 2026, 1:32 PM EDT
Terminated Phase 2 Interventional Results available

Rifaximin on Visceral Hypersensitivity

NCT03462966
View directory record Official record
Conditions
Visceral Hypersensitivity, Irritable Bowel Syndrome
Interventions
Rifaximin
Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Oct 21, 2026, 1:32 PM EDT
Not listed Not applicable Interventional

Intestinal Inflammation and Carbohydrate Digestion in Autistic Children

NCT00227487
View directory record Official record
Conditions
Autism, Inflammation
Interventions
Stool collection, Administration of carbohydrate solution during clinically indicated endoscopy, Questionnaires
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Months to 17 Years
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
2
States / cities
Boston, Massachusetts • Newton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 30, 2016 · Synced Oct 21, 2026, 1:32 PM EDT
Withdrawn Not applicable Interventional

Hepatic Encephalopathy: Lactulose or Polyethylene Glycol (H.E.L.P.)

NCT01923376
View directory record Official record
Conditions
Hepatic Encephalopathy, HE, Cirrhosis, Altered Mental Status, AMS
Interventions
Lactulose, Polyethylene Glycol 3350
Drug
Lead sponsor
New York Presbyterian Brooklyn Methodist Hospital
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 12, 2015 · Synced Oct 21, 2026, 1:32 PM EDT
Withdrawn Not applicable Interventional

Is Topiramate Effective in Treating Dizziness in Patient's With Migraine-Associated Dizziness

NCT00732108
View directory record Official record
Conditions
Migraine, Headache, Dizziness
Interventions
topiramate, lactulose placebo pill
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 6, 2015 · Synced Oct 21, 2026, 1:32 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Bacterial Overgrowth Associated With Chronic Multisymptom Illness Complex

NCT00956150
View directory record Official record
Conditions
Gulf War Syndrome
Interventions
Lactulose Breath Test, Rifaximin, Placebo
Procedure · Drug
Lead sponsor
Henry C. Lin, MD
Federal
Eligibility
21 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2009
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated May 1, 2013 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Study to Assess the Effect of Increasing Intake Amounts of Two Novel Glycans on the Gut Microbiota of Healthy Subjects

NCT04619875
View directory record Official record
Conditions
Healthy
Interventions
KB5, SG1, Lactulose
Other
Lead sponsor
Kaleido Biosciences
Industry
Eligibility
18 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 6, 2020 · Synced Oct 21, 2026, 1:32 PM EDT
Terminated Phase 3 Interventional Results available

RICE Trial: Rifaximin In Chronic Hepatic Encephalopathy - A Randomized, Controlled Trial

NCT00364689
View directory record Official record
Conditions
Hepatic Encephalopathy
Interventions
Rifaximin, Lactulose, Placebo
Drug · Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Oct 21, 2026, 1:32 PM EDT
Terminated Phase 4 Interventional

Quality of Life and Nutritional Improvements in Cirrhotic Patients

NCT01842113
View directory record Official record
Conditions
Liver Cirrhosis, Hepatic Encephalopathy, Portal Hypertension
Interventions
Rifaximin, Lactulose, Lactulose Placebo, Rifaximin Placebo
Drug
Lead sponsor
Tampa General Hospital
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 23, 2013 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 4 Interventional Results available

rHGH and Intestinal Permeability in Intestinal Failure

NCT01380366
View directory record Official record
Conditions
Short Bowel Syndrome
Interventions
Somatropin, Seven Day Food Diary, Blood Tests (standard of care), Fasting, Sugar Permeability Test, Urine Collection
Drug · Procedure · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 8, 2016 · Synced Oct 21, 2026, 1:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Longitudinal Monitoring of Stool Characteristics

NCT05604274
View directory record Official record
Conditions
Cirrhosis, Liver
Interventions
App to monitor stool consistency and symptoms
Other
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 13, 2025 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Small Intestinal Bacterial Overgrowth Contribute to Functional Dyspepsia

NCT00956397
View directory record Official record
Conditions
Functional Dyspepsia, Small Intestinal Bacterial Overgrowth, Chronic Abdominal Discomfort
Interventions
Rifaximin, Lactulose Breath Test, Placebo
Drug · Procedure
Lead sponsor
Henry C. Lin, MD
Federal
Eligibility
21 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Oct 24, 2012 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 2 Interventional Results available

Combination Bisphosphonate and Anti-Angiogenesis Therapy With Pamidronate and Thalidomide

NCT00083382
View directory record Official record
Conditions
Multiple Myeloma
Interventions
Pamidronate, Thalidomide, Zometa
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2014
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jun 24, 2015 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Not applicable Interventional

A Study of Controlled Lactulose Withdrawal

NCT00914056
View directory record Official record
Conditions
Hepatic Encephalopathy
Interventions
lactulose
Drug
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years to 75 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 20, 2013 · Synced Oct 21, 2026, 1:32 PM EDT
Recruiting Not applicable Interventional

New Mechanisms of Obesity

NCT06768827
View directory record Official record
Conditions
Obesity and Overweight, Insulin Resistance, Obesity and Obesity-related Medical Conditions
Interventions
Lactulose Oral Product
Other
Lead sponsor
Yale University
Other
Eligibility
15 Years to 22 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Breath and Blood Ammonia Response to an Oral Protein Challenge

NCT02650245
View directory record Official record
Conditions
Cirrhosis
Interventions
EAS Myoplex Protein Drink + 10gm lactulose
Dietary Supplement
Lead sponsor
St. Luke's Hospital and Health Network, Pennsylvania
Other
Eligibility
18 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Bethlehem, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 13, 2016 · Synced Oct 21, 2026, 1:32 PM EDT
Completed Phase 2 Interventional Results available

Dose-Adjusted EPOCH Chemotherapy and Rituximab (CD20+) in Previously Untreated Aggressive Non-Hodgkin's Lymphoma

NCT00001337
View directory record Official record
Conditions
Diffuse Large B-Cell Lymphoma (DLBCL), Primary Mediastinal Large B-cell Lymphoma, Burkitt Lymphoma, Anaplastic Large-Cell Lymphoma, Gray Zone Lymphoma
Interventions
Etoposide, Rituximab, Prednisone, Cyclophosphamide, Vincristine, Doxorubicin, MRI, CT, Biopsy, PET scan, Laparotomy, Ondansetron, Prochlorperazine, Omeprazole, Docusate Sodium + Sennosides, Lactulose
Drug · Biological · Diagnostic Test + 2 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
12 Years and older
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1993 – 2024
U.S. locations
5
States / cities
Fort Lauderdale, Florida • Baltimore, Maryland • Bethesda, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2025 · Synced Oct 21, 2026, 1:32 PM EDT