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Completed Phase 3 Interventional

A Twelve-Week Study of Varenicline for Safety and Efficacy in Comparison With Placebo and Zyban for Smoking Cessation

ClinicalTrials.gov ID: NCT00143364

Public ClinicalTrials.gov record NCT00143364. 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 28, 2026, 6:49 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 Twelve-Week, Double-Blind, Placebo-Controlled, Randomized, Multicenter Study With Follow-up Evaluating the Safety and Efficacy of Varenicline Tartrate ( CP-526,555) in Comparison to Zyban for Smoking Cessation

Brief summary

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

The primary purpose of this study is to evaluate the safety and efficacy of varenicline given for a twelve week treatment period in comparison with placebo and Zyban for smoking cessation.

Study identification

NCT ID
NCT00143364
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Lead sponsor
Pfizer
Industry
Enrollment
1,005 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 75 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
Jun 2003 (Type not available)
Primary completion
Not listed
Completion
Mar 2005 (Actual)
Last update posted
Jun 4, 2007

2003 – 2005

United States locations

U.S. sites
15
U.S. states
11
U.S. cities
15
Facility City State ZIP Site status
Pfizer Investigational Site Palo Alto California — —
Pfizer Investigational Site San Diego California — —
Pfizer Investigational Site Denver Colorado — —
Pfizer Investigational Site Pembroke Pines Florida — —
Pfizer Investigational Site Indianapolis Indiana — —
Pfizer Investigational Site Portland Maine — —
Pfizer Investigational Site Boston Massachusetts — —
Pfizer Investigational Site Albert Lea Minnesota — —
Pfizer Investigational Site Rochester Minnesota — —
Pfizer Investigational Site New York New York — —
Pfizer Investigational Site Rochester New York — —
Pfizer Investigational Site Providence Rhode Island — —
Pfizer Investigational Site Nashville Tennessee — —
Pfizer Investigational Site Madison Wisconsin — —
Pfizer Investigational Site Milwaukee Wisconsin — —

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 NCT00143364, 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 Jun 4, 2007 · Synced Oct 28, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00143364 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →