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ClinicalTrials.gov public records Last synced Oct 10, 2026, 12:10 AM EDT

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Showing 25–39 of 39 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Phentermine/Topiramate (Qsymia) Clear all
Completed Phase 4 Interventional Results available

A Pharmacokinetic Study Comparing VI-0521 With Placebo in Obese Adolescents

NCT02714062
View directory record Official record
Conditions
Pediatric Obesity, Childhood Obesity
Interventions
Placebo, VI-0521 Mid Dose, VI-0521 Top Dose
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
12 Years to 17 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
4
States / cities
Baton Rouge, Louisiana • Marrero, Louisiana • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2022 · Synced Oct 10, 2026, 12:10 AM EDT
Not yet recruiting Phase 2 Interventional

Obesity Treatment With Phentermine-Topiramate ER in AYA Surviving Leukemia and Lymphoma

NCT07790913
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia in Remission, Hodgkin Lymphoma in Remission, Non-Hodgkin Lymphoma in Remission, Cancer Survivorship
Interventions
Phentermine/Topiramate ER, Health Behavior and Lifestyle Counseling
Drug · Behavioral
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
12 Years to 24 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Anti-Obesity Phentermine-Topiramate Extended Release Pharmacotherapy vs Placebo Among Patients Using a Wearable Activity Tracker

NCT04408586
View directory record Official record
Conditions
Obesity
Interventions
Phentermine-Topiramate Extended Release, Placebo, Online support system
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 2 Interventional Results available

Phentermine/Topiramate for Uric Acid Stones

NCT04621929
View directory record Official record
Conditions
Obesity, Uric Acid Stones, Type 2 Diabetes Mellitus in Obese, Pre-Diabetes
Interventions
Phentermine / Topiramate Oral Product, Citrate Salts, Allopurinol, Diet
Drug · Combination Product
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 75 Years
Enrollment
19 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 15, 2026 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 1 Interventional

FDA Approved Medication to Reduce Binge Eating and/or Purging

NCT02553824
View directory record Official record
Conditions
Binge Eating Disorder, Bulimia Nervosa
Interventions
Phentermine/Topiramate-First, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 60 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Oct 10, 2026, 12:10 AM EDT
Terminated Phase 4 Interventional Results available

EMI-EHP Weight Management and Type 2 Diabetes Pragmatic Trial

NCT04531176
View directory record Official record
Conditions
Type 2 Diabetes, Obesity
Interventions
Weight Management Program (WMP), Traditional care, Phentermine / Topiramate Extended Release Oral Capsule, naltrexone/bupropion extended-release, liraglutide 3.0 mg, Orlistat
Other · Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 2 Interventional

Phentermine/Topiramate Extended Release in Binge Eating Disorder (BED)

NCT02659475
View directory record Official record
Conditions
Binge Eating Disorder
Interventions
PHEN/TPM ER (Qsymia®)
Drug
Lead sponsor
Lindner Center of HOPE
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Mason, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 20, 2016 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 3 Interventional Results available

Individualized Obesity Pharmacotherapy

NCT03374956
View directory record Official record
Conditions
Obesity
Interventions
Phentermine-Topiramate, Liraglutide, Naltrexone/bupropion, Phentermine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 4 Interventional Results available

Topiramate Treatment of Alcohol Use Disorders in Veterans With Post Traumatic Stress Disorder (PTSD): A Pilot Controlled Trial of Augmentation Therapy

NCT01087736
View directory record Official record
Conditions
PTSD, Alcohol Abuse, Alcoholism
Interventions
Topiramate, Placebo administration
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 4 Interventional Results available

A Phase IV Safety and Efficacy Study of VI-0521 in Adolescents With Obesity

NCT03922945
View directory record Official record
Conditions
Adolescent Obesity, Obesity in Adolescence, Adolescent Overweight
Interventions
VI-0521 oral capsule, Placebo oral capsule, Lifestyle Modification
Drug · Behavioral
Lead sponsor
VIVUS LLC
Industry
Eligibility
12 Years to 16 Years
Enrollment
223 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated Sep 10, 2022 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of VI-0521 for the Treatment of Obstructive Sleep Apnea / Hypopnea Syndrome in Obese Adults

NCT00745251
View directory record Official record
Conditions
Sleep Apnea
Interventions
VI-0521, placebo
Drug
Lead sponsor
VIVUS LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 5, 2012 · Synced Oct 10, 2026, 12:10 AM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Phentermine/Topiramate as Preventive Pharmacotherapy for Obesity

NCT05834062
View directory record Official record
Conditions
Obesity, Adolescent
Interventions
Qsymia and lifestyle management therapy, Placebo and lifestyle management therapy
Drug · Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
16 Years to 22 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 26, 2023 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

EQW, DAPA, EQW/DAPA, DAPA/MET ER and PHEN/TPM ER in Obese Women With PolycysticOvary Syndrome (PCOS)

NCT02635386
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Obesity
Interventions
Exenatide once weekly (EQW ), Dapagliflozin (DAPA), EQW plus DAPA, Dapagliflozin plus Glucophage (MET ER), Phentermine /Topiramate (PHEN/ TPM) ER
Drug
Lead sponsor
Woman's
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 29, 2021 · Synced Oct 10, 2026, 12:10 AM EDT
Completed Phase 4 Interventional Results available

Real World Effectiveness of Combining an Employer-based Weight Management Program With Medication for Chronic Weight Management in Employees With Obesity

NCT03799198
View directory record Official record
Conditions
Obesity
Interventions
Weight Management Program (WMP), Medication for chronic weight management (Rx)
Other · Drug
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Oct 10, 2026, 12:10 AM EDT
Recruiting Phase 4 Interventional

Pharmacotherapy in Conjunction With Lifestyle Counseling for Management of Weight Regain After Bariatric Surgery

NCT05975580
View directory record Official record
Conditions
Obesity
Interventions
Topiramate, Phentermine, Placebo
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 10, 2026, 12:10 AM EDT