Completed
A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study To Evaluate The Efficacy And Safety Of Two Fixed Doses (200 Mg, Or 400 Mg) Of DVS-233 SR In Adult Outpatients With Major Depressive Disorder
What is being tested
Data Collection
Who is being recruted
Mental Disorders+1
+ Depressive Disorder, Major
+ Depressive Disorder
From 18 to 75 Years
+6 Eligibility Criteria
How is the trial designed
Treatment Study
Phase 3
Interventional
Summary
Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner
Primary Objective: To compare the antidepressant efficacy and safety of subjects receiving DVS-233 SR versus subjects receiving placebo. Secondary Objective: To assess the response of subjects receiving DVS-233 SR for the clinical global evaluation, functionality, general wellbeing, pain, and absence of symptoms (Hamilton Psychiatric Rating Scale for Depression, 17-item \[HAM-D17\] less than or equal to 7) versus those subjects receiving placebo.
Official TitleA Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study To Evaluate The Efficacy And Safety Of Two Fixed Doses (200 Mg, Or 400 Mg) Of DVS-233 SR In Adult Outpatients With Major Depressive Disorder
Principal SponsorWyeth is now a wholly owned subsidiary of Pfizer
Last updated: January 27, 2026
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
375 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 DisordersDepressive Disorder, MajorDepressive DisorderMood Disorders
Criteria
3 inclusion criteria required to participate
Outpatients
Sexually active women participating in the study must use a medically acceptable form of contraception
Subjects must have a primary diagnosis of major depressive disorder of 4 on Clinical Global Impressions-Severity scale (CGI-S)
3 exclusion criteria prevent from participating
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