# An Open Label Study That Compares Varenicline to Transdermal Nicotine Patch for Smoking Cessation

> **NCT00143325** · PHASE3 · COMPLETED · sponsor: **Pfizer** · enrollment: 730 (—)

## Conditions studied

- Smoking Cessation

## Interventions

- **DRUG:** varenicline (CP-526,555)

## Key facts

- **NCT ID:** NCT00143325
- **Lead sponsor:** Pfizer
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE3
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2005-01
- **Primary completion:** —
- **Final completion:** 2006-06
- **Target enrollment:** 730 (—)
- **Last updated:** 2007-06-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00143325

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00143325, "An Open Label Study That Compares Varenicline to Transdermal Nicotine Patch for Smoking Cessation". Retrieved via MORVS 2026-10-24 from https://api.morvs.ai/clinical/NCT00143325. Licensed CC0.

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