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ClinicalTrials.gov public records Last synced Nov 3, 2026, 11:37 PM EST

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Showing 1–24 of 162 matching trials from the live ClinicalTrials.gov search.

Filters: Condition: Gastric Bypass Surgery Clear all

Conditions: Weight Regain, Weight Recidivism, Obesity Recidivism, Clinically Severe Obesity
Interventions: Not listed
Lead sponsor: University of California, San Francisco; Other
Eligibility: 18 Years to 65 Years
Enrollment: 132 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009
U.S. locations: 1
States / cities: Fresno, California

Conditions: Bariatric Surgery Candidate
Interventions: Zoledronic Acid, Calcium citrate + vitamin D, Vitamin D3; Drug · Dietary Supplement
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 25 Years to 100 Years
Enrollment: 6 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Roux en Y Gastric Bypass, Sleeve Gastrectomy
Interventions: Venlafaxine IR and Venlafaxine XR; Drug
Lead sponsor: North Dakota State University; Other
Eligibility: 18 Years to 65 Years
Enrollment: 12 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Fargo, North Dakota

Conditions: Patients Undergoing Elective Coronary Artery Bypass Graft
Interventions: Lansoprazole; Drug
Lead sponsor: Temple University; Other
Eligibility: 18 Years to 65 Years
Enrollment: 40 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2005 – 2006
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Obesity
Interventions: GLP-1 receptor agonist, Gastric Bypass Surgery (laparoscopic), Gastric Bypass Surgery (robotic); Drug · Procedure
Lead sponsor: Vanderbilt University Medical Center; Other
Eligibility: 21 Years to 65 Years
Enrollment: 60 participants
Timeline: 2025 – 2027
U.S. locations: 1
States / cities: Nashville, Tennessee

Conditions: Obesity, Protein-energy; Imbalance, Insulin Sensitivity, Gastrointestinal Complication
Interventions: Laparoscopic Roux-en-Y gastric bypass, Laparoscopic gastric banding, Laparoscopic sleeve gastrectomy, Low Calorie Diet; Procedure · Behavioral
Lead sponsor: Pennington Biomedical Research Center; Other
Eligibility: 18 Years to 65 Years
Enrollment: 48 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2014
U.S. locations: 1
States / cities: Baton Rouge, Louisiana

Conditions: Bariatric Surgery, Osteoporosis, Fractures, Bone, Roux En-Y Gastric Bypass, Sleeve Gastrectomy, Menopause, Premenopause
Interventions: Roux en Y Gastric Bypass Pre-menopausal, Roux en Y Gastric Bypass Post-menopausal, Sleeve Gastrectomy Pre-menopausal, Sleeve Gastrectomy Post-menopausal; Procedure
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 19 Years and older · Female only
Enrollment: 27 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: Birmingham, Alabama

Conditions: Obesity, Type 2 Diabetes Mellitus
Interventions: Diabetes Support and Education, gastric bypass surgery, Tissue Control Group; Other · Procedure
Lead sponsor: Duke University; Other
Eligibility: 18 Years to 60 Years
Enrollment: 84 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2011
U.S. locations: 1
States / cities: Durham, North Carolina

Conditions: Post-operative Pain
Interventions: Pregabalin, Placebo (for Pregabalin); Drug
Lead sponsor: Legacy Health System; Other
Eligibility: 18 Years to 70 Years
Enrollment: 61 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2016
U.S. locations: 1
States / cities: Portland, Oregon

Conditions: Pain, Obesity
Interventions: Lidocaine Infusion, Normal Saline; Drug
Lead sponsor: Northwestern University; Other
Eligibility: 18 Years to 70 Years
Enrollment: 51 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2012
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Obesity, Morbid, Diabetes Mellitus, Type 2, Gastric Bypass
Interventions: Not listed
Lead sponsor: CPL Associates; Other
Eligibility: 18 Years to 95 Years
Enrollment: 15 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2015
U.S. locations: 2
States / cities: Buffalo, New York • Williamsville, New York

Conditions: Internal Hernia, Mesocolic Hernia, Petersen´s Hernia, Jejunojejunostomy Hernia, Bowel Obstruction, Ischemic Bowel
Interventions: Not listed
Lead sponsor: University of California, San Francisco; Other
Eligibility: 18 Years to 65 Years
Enrollment: 220 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009
U.S. locations: 1
States / cities: Fresno, California

Conditions: Obesity
Interventions: Prebiotic: soluble corn fiber, Placebo: maltodextrin; Dietary Supplement
Lead sponsor: San Francisco Veterans Affairs Medical Center; Federal
Eligibility: 18 Years to 75 Years · Female only
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2020
U.S. locations: 1
States / cities: San Francisco, California

Conditions: Marginal Ulcers
Interventions: Omeprazole, Famotidine; Drug
Lead sponsor: University of Missouri-Columbia; Other
Eligibility: 18 Years and older
Enrollment: 40 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2008
U.S. locations: 1
States / cities: Columbia, Missouri

Conditions: Bariatric Surgery Candidate, Contraception
Interventions: ethinyl estradiol-levonorgestrel; Drug
Lead sponsor: Johns Hopkins University; Other
Eligibility: 18 Years to 40 Years · Female only
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2017
U.S. locations: 1
States / cities: Baltimore, Maryland

Conditions: Obesity
Interventions: Not listed
Lead sponsor: Vanderbilt University; Other
Eligibility: 20 Years to 60 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2012
U.S. locations: 1
States / cities: Nashville, Tennessee

Conditions: Obesity, Type 2 Diabetes Mellitus, Insulin Resistance
Interventions: Not listed
Lead sponsor: Boston Medical Center; Other
Eligibility: 21 Years to 64 Years
Enrollment: 5 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2004 – 2006
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Type 2 Diabetes Mellitus, Insulin Resistance
Interventions: Gastric Bypass w/ matched hypocaloric diet, Hypocaloric diet; Procedure · Other
Lead sponsor: University of Minnesota; Other
Eligibility: 18 Years to 70 Years
Enrollment: 57 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2018
U.S. locations: 1
States / cities: Minneapolis, Minnesota

Conditions: Type 2 Diabetes Mellitus
Interventions: OPTIFAST; Other
Lead sponsor: Moahad S Dar; Other
Eligibility: 25 Years to 70 Years
Enrollment: 5 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018
U.S. locations: 1
States / cities: Greenville, North Carolina

Conditions: Laparoscopic Gastric Bypass, Obesity, Pain, Postoperative
Interventions: Ketamine, Narcotics, pain scale; Drug · Behavioral
Lead sponsor: University of Florida; Other
Eligibility: 18 Years to 65 Years
Enrollment: 54 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2018
U.S. locations: 1
States / cities: Gainesville, Florida

Conditions: Obesity, Obesity, Morbid, Obesity Associated Disorder, Bariatric Surgery Candidate, Fistula, Gastric, Roux-en-y Anastomosis Site, Ulcer, Gastric, Abdominal Pain, Abdominal Obesity, Complication of Surgical Procedure, Complication of Treatment, Complication,Postoperative, Weight Gain, Weight Loss, Leak, Anastomotic, Delayed Gastric Emptying Following Procedure
Interventions: Primary Obesity Endoscopic Procedures, Endoscopic Revision of Bariatric Surgical Procedures, Bariatric Surgery Procedures, Endoscopic Sleeve Gastroplasty, Trans-oral Outlet Reduction, Intragastric Balloon, Primary obesity surgery endoluminal, Restorative obesity surgery endoluminal, Argon Plasma Coagulation, Gastroplasty with Endoscopic Myotomy, Bariatric Endoscopic Antral Myotomy, Pylorus Sparing Antral Myotomy, Aspiration Therapy; Procedure · Device
Lead sponsor: Christopher C. Thompson, MD, MSc; Other
Eligibility: 18 Years to 80 Years
Enrollment: 5,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2029
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Morbid Obesity, Insulin Resistance, Non-Alcoholic Fatty Liver Disease
Interventions: Not listed
Lead sponsor: University of Massachusetts, Worcester; Other
Eligibility: 18 Years to 65 Years
Enrollment: 61 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2012
U.S. locations: 1
States / cities: Worcester, Massachusetts

Conditions: Obesity, Bariatric Surgery, Roux-en Y Gastric Bypass
Interventions: Digestive biopsy, Carvedilol 25mg, Serial blood sampling for PK analysis, Metoprolol 100 mg for CYP2D6 phenotyping, Simvastatin 40mg, Midazolam 2 mg for CYP3A4 phenotyping, Genotyping; Procedure · Drug · Other
Lead sponsor: Natalia Valadares de Moraes; Other
Eligibility: 18 Years to 65 Years
Enrollment: 120 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2019 – 2023
U.S. locations: 1
States / cities: Orlando, Florida

Conditions: Gastric Bypass Surgery Pain Management
Interventions: Real TMS 45 min, Sham TMS 45 min, Real TMS 4 Hours, Sham TMS 4 Hours; Device
Lead sponsor: Medical University of South Carolina; Other
Eligibility: 18 Years to 60 Years
Enrollment: 108 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2005 – 2011
U.S. locations: 1
States / cities: Charleston, South Carolina

Search by objective public record fields.

Laparoscopic Revision Gastric Bypass for Weight Recidivism

Pilot Study for Zoledronic Acid to Prevent Bone Loss After Bariatric Surgery

Venlafaxine PK Following Bariatric Surgery

Lansoprazole Preventing Gastroduodenal Stress Ulcerations

Comparison of Body Composition Changes With Weight Loss Interventions

Bariatric Surgery and Weight Loss on Energy Metabolism and Insulin Sensitivity

Skeletal Health in Bariatric Surgery Patients

Impact of GBS on CVD in Type 2 Diabetes Mellitus

Preoperative Pain Control in Gastric Bypass Surgery Patients

IV Lidocaine on Postoperative Pain and QOR on Morbid Obese Patients Undergoing Bypass Surgery

Endotoxin and Intestinal Flora Before and After Gastric Bypass or Banding in Diabetics

Internal Hernias After Laparoscopic Gastric Bypass

PRebiotic to IMprovE Calcium Absorption

Ulcer Prevention Study in Post Gastric Bypass Patients

Changes in Oral Contraceptive Hormones After Gastric Bypass Surgery

Microenvironment of Adipose Tissue in Endocannabinoid System

A Study to Examine Changes in GIP Plasma Levels Following Gastric Bypass Surgery in Obese Patients

Bariatric Surgery And Adipose Inflammation Dysfunction and Type 2 Diabetes Mellitus

Medically Reproducing Bariatric Surgery

Ketamine vs Hydromorphone

Endoscopic Metabolic and Bariatric Therapies

Assessment of Insulin Resistance, NAFLD, Predictors of CV Morbidity, and Subcutaneous Adipose and Visceral Adipose Gene Expression in Patients Undergoing Gastric Bypass Surgery

Impact of Bariatric Surgery on Pharmacokinetic Study of Simvastatin and Carvedilol

Transcranial Magnetic Stimulation Effects on Pain Perception