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Completed Phase 3 Interventional Results available

A Safety and Efficacy Study of Naltrexone SR/Bupropion SR and Placebo in Overweight and Obese Subjects Participating in an Intensive Behavior Modification Program

ClinicalTrials.gov ID: NCT00456521

Public ClinicalTrials.gov record NCT00456521. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 26, 2026, 3:28 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study Comparing the Safety and Efficacy of Naltrexone Sustained Release (SR)/Bupropion SR and Placebo in Subjects With Obesity Participating in a Behavior Modification Program

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this study is to determine whether a combination of naltrexone SR and bupropion SR is safe and effective in treating obesity and leads to greater weight loss when given with a group lifestyle modification program than with group lifestyle modification alone.

Study identification

NCT ID
NCT00456521
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Orexigen Therapeutics, Inc
Industry
Enrollment
793 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 65 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Mar 2007 (Type not available)
Primary completion
Dec 2008 (Actual)
Completion
Dec 2008 (Actual)
Last update posted
Dec 17, 2014

2007 – 2008

United States locations

U.S. sites
9
U.S. states
8
U.S. cities
8
Facility City State ZIP Site status
University of California, San Diego: Dept of Family & Preventive Medicine La Jolla California 92093 —
Center for Human Nutrition, University of Colorado Health Services Center Denver Colorado 80220 —
Univ. of Florida, College of Public Health, and Health Professions Gainesville Florida 32611 —
Washington Univ. Center for Human Nutrition St Louis Missouri 63110 —
New York Obesity Research Center, St. Luke's-Roosevelt Hospital Center New York New York 10025 —
Center for Weight and Eating Disorders, School of Med., University of Penn. Philadelphia Pennsylvania 19104 —
Center for Obesity Research and Education, Temple University Philadelphia Pennsylvania 19140 —
Medical University of S. Carolina Weight Management Center Charleston South Carolina 29425 —
Behavioral Medicine Research Center Houston Texas 77030 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00456521, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Dec 17, 2014 · Synced Oct 26, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00456521 live on ClinicalTrials.gov.

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