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A Single Dose Study Investigating the Absorption and Elimination as Well as the Tolerability of Varenicline Transdermal Delivery System (e.g., a Patch) as Compared to Oral Varenicline in Adult Smokers.

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: April 18, 2008
Last Update Posted: April 23, 2009
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
  1. To evaluate the absorption and elimination of varenicline Formulation A transdermal delivery system [TDS (patch)] compared to varenicline immediate release tablet (CHANTIX®).
  2. To evaluate the adhesion of the varenicline Formulation A patch.
  3. To evaluate the safety and tolerability of a single application of the varenicline patch and a single oral dose of the varenicline immediate release tablet (CHANTIX®).

Condition Intervention Phase
Smoking Cessation Drug: varenicline tartrate Drug: varenicline free base Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Official Title: A Phase I, Open-Label, Randomized, Single Dose, Cross Over Study to Estimate the Relative Bioavailability of a Varenicline (CP-526,555) Transdermal Delivery System to the Chantix Immediate Release Tablet Formulation in Adult Smokers

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Rating Scale for Adhesive Residue (e.g., assesses how well the transdermal delivery system remains adhered to subject's skin) [ Time Frame: 24 hours per Arm ]
  • Rating Scale for Assessment of Application Site Dermal-Erythema, Edema, and Irritation (assesses skin irritation associated with varenicline transdermal delivery system) [ Time Frame: 6 days per Arm ]
  • Pharmacokinetic endpoints: plasma varenicline area under the curve (AUClast and AUCinf), maximum plasma concentration (Cmax), terminal half-life (t 1/2) and time of maximum plasma concentration (Tmax) [ Time Frame: 6 days per Arm ]

Secondary Outcome Measures:
  • Assessment of Adhesidue/Cold Flow Assessment (assesses extent of adhesive residue which remains on the skin at application site as well as the adhesive flow beyond the application site border [ Time Frame: 24 hours per Arm ]
  • Evaluation of adverse events (including the visual analog scale for nausea), safety laboratory testing, electrocardiogram, vital signs [ Time Frame: 6 days per Arm ]

Enrollment: 18
Study Start Date: April 2008
Study Completion Date: June 2008
Primary Completion Date: June 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Chantix immediate release tablet formulation Drug: varenicline tartrate
Single dose of 2.0 mg oral Chantix (varenicline) immediate release tablet formulation
Other Name: varenicline, Chantix, Champix
Experimental: Varenicline transdermal delivery system Drug: varenicline free base
A single 2.0 mg dose of varenicline transdermal delivery system applied to the skin for a 24 hour period.
Other Name: varenicline


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • healthy adult smokers

Exclusion Criteria:

  • Significant blood, kidney, lung, gastrointestinal, heart, liver, psychiatric, or neurologic disease
  • Illegal drug usage
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00661765

United States, North Dakota
Pfizer Investigational Site
Fargo, North Dakota, United States, 58104
Sponsors and Collaborators
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Director, Clinical Trial Disclosure Group, Pfizer, Inc.
ClinicalTrials.gov Identifier: NCT00661765     History of Changes
Other Study ID Numbers: A3051071
First Submitted: April 14, 2008
First Posted: April 18, 2008
Last Update Posted: April 23, 2009
Last Verified: April 2009

Keywords provided by Pfizer:
varenicline bioavailability transdermal smoking cessation

Additional relevant MeSH terms:
Nicotinic Agonists
Cholinergic Agonists
Cholinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs