CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 641 enrolled
Drug / intervention
Varenicline +3 moredrug
Likely dose
Varenicline 5mgfrom record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT00943618
NCT00943618Phase 3Completed

Effectiveness of Varenicline vs. Varenicline Plus Bupropion or Placebo for Smoking Cessation

M.D. Anderson Cancer Center·interventional·Posted Jul 22, 2009·Updated May 4, 2025

In Brief

A Phase 3 clinical trial evaluating Varenicline, Bupropion, and 2 other interventions for Smoking Cessation. Completed, enrolled 641 participants across 1 site.

Detailed Summary

The goal of this clinical research study is learn if the combination of Chantix (varenicline) and Zyban (bupropion) is more effective at helping people to quit smoking than varenicline when given alone. Researchers also want to learn if this drug combination can reduce cravings and other negative symptoms of nicotine withdrawal better than varenicline does alone. The safety of this drug combination will also be tested.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 3CompletedFinished
20102011201220132014201520162017201820192020202120222023202420252026
First PostedJul 22, 2009
Enrollment StartMay 17, 2010
Primary CompletionMay 31, 2020
Study CompletionSep 9, 2021
TodayJul 2, 2026
Enrollment to primary: 10.0 yearsPosted 16.9 years ago

Interventions

Vareniclinedrug

On Days 1-3, .5mg tablet by mouth in the morning. Beginning on Day 4, and then every day after that, .5mg tablet by mouth in the morning and .5mg tablet by mouth in the evening (for a total of 2 doses).

Bupropiondrug

On Days 1-3, 150 mg tablet by mouth in the morning. Beginning on Day 4, and then every day after that, 150 mg tablet by mouth in the morning and 150 mg tablet by mouth in the evening (for a total of 2 doses).

Placeboother

On Days 1-3, 1 tablet by mouth of placebo that looks like the study drug in the morning. Beginning on Day 4, and then every day after that, 1 tablet by mouth in the morning and 1 tablet by mouth in the evening for a total of 2 doses of the placebo each day.

Counseling/Phone Callsbehavioral

Brief-behavioral counseling sessions (10-15 minutes) provided to all participants once per week for 12 weeks. One support phone call conducted 3 days after the target quit date.