Completed

A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Flexible-Dose Study Of DVS-233 SR And Venlafaxine ER In Adult Outpatients With Major Depressive Disorder

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What is being tested

Data Collection

Who is being recruted

Mental Disorders+3

+ Behavioral Symptoms

+ Depression

From 18 to 75 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 3
Interventional
See protocol details

Summary

Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: December 11, 2025
Sourced from a government-validated database.Claim as a partner

To compare the antidepressant efficacy and safety of DVS-233 SR with those of placebo in adult outpatients with MDD.

Official TitleA Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Flexible-Dose Study Of DVS-233 SR And Venlafaxine ER In Adult Outpatients With Major Depressive Disorder 
NCT00090649
Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: December 11, 2025
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

369 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.


Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 75 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Mental DisordersBehavioral SymptomsDepressionDepressive Disorder, MajorDepressive DisorderMood Disorders

Criteria

Inclusion Criteria: * Men and women 18 to 75 years of age, inclusive. * Sexually active individuals participating in the study must use a medically acceptable form of contraception during the study and for at least 15 days after the last dose of test article * Subjects must have a primary diagnosis of major depressive disorder Exclusion Criteria: * Treatment with DVS-233 SR at any time in the past * Treatment with venlafaxine (immediate release \[IR\] or extended release \[ER\]) within 90 days of study day 1 * Known hypersensitivity to venlafaxine (IR or ER)

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has no location dataSave this study to your profile to know when the location data is available. 
CompletedNo study centers