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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Bariatric Surgery Candidate Clear all
Not listed Not applicable Interventional Accepts healthy volunteers

DS vs SIPS-Bariatric Surgery Comparasion

NCT03236142
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
SIPS Operation, Standard Duodenal Switch Operation
Procedure
Lead sponsor
Reading Health System
Other
Eligibility
20 Years to 65 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2025
U.S. locations
1
States / cities
West Reading, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 4, 2018 · Synced Jul 23, 2026, 1:13 AM EDT
Recruiting Not applicable Interventional

GI Oxalate Absorption

NCT05356000
View directory record Official record
Conditions
Bariatric Surgery Candidate, Kidney Stone
Interventions
Special low-oxalate diet followed by all-day visit to University of Chicago research clinic
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effect of Liposomal Bupivacaine on Post Operative Pain and Narcotic Use After Bariatric Surgery

NCT03196505
View directory record Official record
Conditions
Bariatric Surgery Candidate, Pain, Postoperative
Interventions
Exparel 266 MG Per 20 ML Injection, Bupivacaine
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
231 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Jul 23, 2026, 1:13 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Single Anastomosis Duodenal Ileal Bypass (SADI) for Sleeve Revision

NCT04165694
View directory record Official record
Conditions
Bariatric Surgery Candidate, Severe Obesity
Interventions
Single Anastomosis Duodenal Ileal Bypass (SADI)
Procedure
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 100 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2030
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Active, not recruiting Phase 4 Interventional

Multimodal Analgesia Effect on Post Surgical Patient

NCT04240626
View directory record Official record
Conditions
Obesity, Morbid, Surgery, Bariatric Surgery Candidate
Interventions
Neurontin, Dilaudid Injectable Product, Marcaine Injectable Product, Oxycodone Hydrochloride, Hycet 7.5Mg-325Mg/15Ml Solution, Zofran Injection, Scopolamine patch, Ativan, Flexeril Oral Product, Tylenol Suspension
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
35 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Active, not recruiting Not applicable Interventional

Hepatic Energy Fluxes in NASH and NAS Patients

NCT03997422
View directory record Official record
Conditions
NASH - Nonalcoholic Steatohepatitis, NAS, Overweight or Obesity, Weight Loss, Bariatric Surgery Candidate
Interventions
Vertical Sleeve Gastrectomy (VSG)
Procedure
Lead sponsor
University of Minnesota
Other
Eligibility
40 Years to 67 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2030
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jul 23, 2026, 1:13 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Prevention of Postoperative Nausea and Vomiting After Bariatric Surgery

NCT04644445
View directory record Official record
Conditions
Bariatric Surgery Candidate, Postoperative Nausea and Vomiting, Morbid Obesity
Interventions
Bariatric Full Liquid Diet
Dietary Supplement
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Protein Supplementation Post Bariatric Surgery

NCT02951663
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Protein
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2019 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Not applicable Interventional

Reducing Alcohol Use Post-Bariatric Surgery

NCT04788316
View directory record Official record
Conditions
Bariatric Surgery Candidate, Alcohol Drinking
Interventions
CBI and Text messaging
Behavioral
Lead sponsor
Henry Ford Health System
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated May 15, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Effect of Opioid Free Anesthetic on Post-Operative Opioid Consumption After Laparoscopic Bariatric Surgery

NCT04081545
View directory record Official record
Conditions
Opioid Use, Unspecified, Bariatric Surgery Candidate, Anesthesia
Interventions
Opioid Anesthetics, Non Opioid Analgesics
Drug
Lead sponsor
Christine Oryhan
Other
Eligibility
18 Years and older
Enrollment
181 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 19, 2024 · Synced Jul 23, 2026, 1:13 AM EDT
Withdrawn Not applicable Interventional

Exercise Training Study Before Bariatric Surgery

NCT06274606
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Exercise Group
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 50 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 13, 2024 · Synced Jul 23, 2026, 1:13 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

CV Imaging of Metabolic Interventions

NCT05650307
View directory record Official record
Conditions
Bariatric Surgery Candidate, Heart Failure, Cardiovascular Diseases
Interventions
MRI
Diagnostic Test
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Not applicable Interventional

Endoscopic Gastric Mucosal Devitalization (GMD) as a Primary Obesity Therapy

NCT03526263
View directory record Official record
Conditions
Obesity, Obesity, Morbid, Obesity; Endocrine, Bariatric Surgery Candidate
Interventions
Gastric mucosal devitalization
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
28 Years to 60 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Jul 23, 2026, 1:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Resting Metabolic Rate Testing in Bariatric Surgery Patients

NCT03221543
View directory record Official record
Conditions
Weight Loss, Bariatric Surgery Candidate
Interventions
ReeVue Indirect Calorimeter
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 25, 2026 · Synced Jul 23, 2026, 1:13 AM EDT
Completed No phase listed Observational

Comparative Analysis of da Vinci-Assisted and Laparoscopic Duodenal Switch Bariatric Surgical Procedures

NCT05575947
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
da Vinci Surgical System, laparoscopic bariatric surgery
Device · Procedure
Lead sponsor
Intuitive Surgical
Industry
Eligibility
18 Years and older
Enrollment
1,878 participants
Timeline
2022
U.S. locations
1
States / cities
Sunnyvale, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Jul 23, 2026, 1:13 AM EDT
Completed Not applicable Interventional

Fiber Supplementation After Bariatric Surgery

NCT05653648
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Potato starch
Dietary Supplement
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Jul 23, 2026, 1:13 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Validity of Physical Activity Questionnaires in Persons Pursuing Bariatric Surgery

NCT03981978
View directory record Official record
Conditions
Bariatric Surgery Candidate, Obesity
Interventions
Physical Activity
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
2
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Jul 23, 2026, 1:13 AM EDT
Withdrawn No phase listed Observational

Potential Benefits of Sleeve Gastrectomy Surgery on Diabetic Gastroparesis Symptoms

NCT03376399
View directory record Official record
Conditions
Weight Loss, Diabetic Gastroparesis, Bariatric Surgery Candidate, Sleeve Gastrectomy, Gastric Emptying
Interventions
Gastroparesis Cardinal Symptom Index Questionnaire
Other
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Timeline
2017 – 2020
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 1, 2020 · Synced Jul 23, 2026, 1:13 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Assisted Robotic vs Laparoscopic Sleeve Gastrectomy

NCT06425016
View directory record Official record
Conditions
Post Operative Pain, Laparoscopic Sleeve Gastrectomy, Robotic Sleeve Gastrectomy, Obesity, Bariatric Surgery Candidate, Quality of Life
Interventions
Laparoscopic Sleeve Gastrectomy (LSG), Robotic Sleeve Gastrectomy (RSG)
Procedure
Lead sponsor
Ricard Corcelles
Other
Eligibility
18 Years to 70 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Recruiting Not applicable Interventional

Gut Microbiome and Sex as Risk Factors for Kidney Stones After Bariatric Surgery

NCT04590690
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Special diet
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 130 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Jul 23, 2026, 1:13 AM EDT
Withdrawn Not applicable Interventional

Mindfulness Meditation and Bariatric Surgery

NCT04167852
View directory record Official record
Conditions
Opioid Use, Bariatric Surgery Candidate, Pain, Postoperative
Interventions
Daily text message, Mindfulness intervention
Behavioral
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Jul 23, 2026, 1:13 AM EDT
Withdrawn Phase 4 Interventional

Changes in Oral Contraceptive Hormones After Gastric Bypass Surgery

NCT01941134
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Mar 20, 2018 · Synced Jul 23, 2026, 1:13 AM EDT
Enrolling by invitation No phase listed Observational

Physiologic and Functional Adaptations of Insulin Sensitive Tissues

NCT03407833
View directory record Official record
Conditions
Diabetes, Insulin Resistance, Obesity, Bariatric Surgery Candidate, Roux-en-y Gastric Bypass, Liver Diseases
Interventions
Endoscopy biopsy, Surgical biopsy, Mixed-meal tolerance test, Excised Liver Tissue Sampling
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2028
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Jul 23, 2026, 1:13 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Symbiotic Use in Post-Bariatric Surgery Patients

NCT06252558
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Symbiotic, Placebo
Dietary Supplement
Lead sponsor
University of North Florida
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 8, 2024 · Synced Jul 23, 2026, 1:13 AM EDT