Completed PHASE4 INTERVENTIONAL 2-arm NCT00474708

Study Comparing the Efficacy of Venlafaxine XR Vs. SSRIs and Conventional Antidepressants in Depressed Patients

The Efficacy of Venlafaxine XR (Efexor XR®) Versus SSRIs & Conventional Antidepressants in Depressed Patients Switched From Prior Antidepressants in Psychiatric Outpatient Care Settings in China

Sponsor: Wyeth is now a wholly owned subsidiary of Pfizer

Conditions Major Depressive Disorder

Interventions Effexor SSRI

Updated 6 times since 2017 Last updated: Mar 2, 2012 Started: Apr 30, 2007 Primary completion: Mar 31, 2008 Completion: Mar 31, 2008

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

This PHASE4 trial investigates Major Depressive Disorder and is currently completed. Wyeth is now a wholly owned subsidiary of Pfizer leads this study, which shows 6 recorded versions since 2007 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.

Status Flow

Change History

6 versions recorded

Sep 2024 — Present [monthly]

Completed PHASE4
Jul 2024 — Sep 2024 [monthly]

Completed PHASE4
Dec 2021 — Jul 2024 [monthly]

Completed PHASE4
Jan 2021 — Dec 2021 [monthly]

Completed PHASE4
Jun 2018 — Jan 2021 [monthly]

Completed PHASE4

▶ Show 1 earlier version

Jan 2017 — Jun 2018 [monthly]

Completed PHASE4

First recorded

Apr 2007

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Wyeth is now a wholly owned subsidiary of Pfizer

Data source: Wyeth is now a wholly owned subsidiary of Pfizer

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

Beijing, China , Changsha, China , Guangzhou, China , Hangzhou, China , Huzhou, China , Jinan, China , Nanjing, China , Shanghai, China , Shenyang, China , Suzhou, China and 4 more locations