Assessment of Safety and Efficacy of Varenicline in Patients That Wish to Stop Smoking
A 12-Week, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study With Follow-Up Evaluating The Safety And Efficacy Of Varenicline Tartrate (CP-526,555-18) 1 Mg Bid For Smoking Cessation (Protocol A3051080)
Sponsor: Pfizer
This PHASE4 trial investigates Smoking Cessation and is currently completed. Pfizer leads this study, which shows 8 recorded versions since 2008 — indicating limited longitudinal coverage. The change history captured here reflects the iterative nature of clinical trial conduct.
Status Flow
Change History
8 versions recorded-
Oct 2025 — Present [monthly]
Completed PHASE4
-
Sep 2025 — Oct 2025 [monthly]
Completed PHASE4
-
Sep 2024 — Sep 2025 [monthly]
Completed PHASE4
-
Jul 2024 — Sep 2024 [monthly]
Completed PHASE4
-
Jan 2021 — Jul 2024 [monthly]
Completed PHASE4
▶ Show 3 earlier versions
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Jun 2018 — Jan 2021 [monthly]
Completed PHASE4
-
Feb 2017 — Jun 2018 [monthly]
Completed PHASE4
-
Jan 2017 — Feb 2017 [monthly]
Completed PHASE4
First recorded
Apr 2008
Trial started
Per CT.gov start date — pre-dates our first snapshot
Eligibility Summary
No eligibility information available.
Contact Information
- Pfizer
For direct contact, visit the study record on ClinicalTrials.gov .