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Smoking Cessation Medications: Efficacy, Mechanisms and Algorithms

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00332644
First Posted: June 2, 2006
Last Update Posted: November 30, 2011
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.
Collaborator:
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
University of Wisconsin, Madison
  Purpose
The proposed work will advance the understanding and effectiveness of tobacco dependence treatment and result in more smokers quitting successfully.

Condition Intervention Phase
Nicotine Dependence Drug: nicotine patch Drug: nicotine lozenge Drug: nicotine patch + nicotine lozenge Drug: bupropion Drug: bupropion + lozenge Drug: placebo Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Pharmacotherapies: Efficacy, Mechanisms and Algorithms

Resource links provided by NLM:


Further study details as provided by University of Wisconsin, Madison:

Primary Outcome Measures:
  • 7-day Point Prevalence of Smoking, Biochemically (Exhaled CO) Confirmed [ Time Frame: 6 months post quit date ]
    Smoking status was assessed both as 7-day point-prevalence abstinence ("Have you smoked at all, even a puff, in the last 7 days?") and continuous abstinence (smoking at all since the target quit day), using a smoking calendar and the timeline follow-back method. All participants' self-reports of smoking status during study visits were confirmed by an expired carbon monoxide level of less than 10 ppm measured using a Micro-3 Smokerlyzer (Bedfont Scientific, Williamsburg, Virginia).


Enrollment: 1504
Study Start Date: September 2004
Study Completion Date: August 2010
Primary Completion Date: August 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
nicotine patch alone treatment
Drug: nicotine patch
used according to FDA package label
Experimental: 2
nicotine lozenge alone treatment
Drug: nicotine lozenge
used according to FDA-approved package directions
Experimental: 3
nicotine patch + lozenge combination treatment
Drug: nicotine patch + nicotine lozenge
dosage of both according to FDA-approved dosing schedule
Experimental: 4
bupropion alone treatment
Drug: bupropion
dosage according to FDA-approved instructions
Experimental: 5
bupropion + nicotine lozenge combination treatment
Drug: bupropion + lozenge
dosage according to FDA approved standard instructions
Placebo Comparator: 6
placebo control (no active medication) treatment
Drug: placebo
dosage same as active drug conditions

Detailed Description:
This research study will last for three years. The first year involves a comparison of smoking cessation medications (bupropion, nicotine patch, and nicotine lozenge), including medications used in combination. The results of this study may allow researchers and clinicians to decide which medications are best for helping people to quit smoking as well as what treatments work best for different people. In addition, the first year of this study may help to clarify how these medications work.The purpose of the second and third years of this research study will be to get long-term results on the physical health, mental health, lifestyle factors, and the overall quality of life of people attempting to quit smoking. The results of this study may help researchers and clinicians better understand the health improvements that come from quitting or not quitting smoking.
  Eligibility

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Smoke at least 10 cigarettes per day for the previous 6 months - Expired CO > 9 ppm - Motivated to quit smoking - Able to read and write English - Willing to complete required study assessments

Exclusion Criteria:

  • Uncontrolled hypertension (systolic >180mm Hg or diastolic >110mm Hg) - History of bipolar disorder or psychosis - Myocardial infarction or other serious cardiac problem in the previous 4 weeks - History of diagnosed anorexia and/or bulimia - Diagnosis of Alcohol Dependence in the previous 6 months by participant self-report or drinking 6 or more drinks on six or more days a week - History of seizure and/or serious head injury involving loss of consciousness - Use of contraindicated medications (MAO inhibitors, bupropion, lithium, anticonvulsants, antipsychotics) - Currently pregnant or breast-feeding - Unwilling to use effective contraception during the treatment phase - More than one participant from the same household - Allergic reactions to 3 or more classes of drugs
  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): NCT00332644


Locations
United States, Wisconsin
UW-CTRI Madison Research site
Madison, Wisconsin, United States, 53711
UW-CTRI Milwaukee Research site
Milwaukee, Wisconsin, United States, 53233
Sponsors and Collaborators
University of Wisconsin, Madison
National Institute on Drug Abuse (NIDA)
Investigators
Principal Investigator: Timothy B. Baker, PhD University of Wisconsin, Madison
  More Information

Additional Information:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
McCarthy DE, Ebssa L, Witkiewitz K, Shiffman S. Paths to tobacco abstinence: A repeated-measures latent class analysis. J Consult Clin Psychol. 2015 Aug;83(4):696-708. doi: 10.1037/ccp0000017. Epub 2015 Apr 13.
Smith SS, Fiore MC, Baker TB. Smoking cessation in smokers who smoke menthol and non-menthol cigarettes. Addiction. 2014 Dec;109(12):2107-17. doi: 10.1111/add.12661. Epub 2014 Jul 21.
Stein JH, Asthana A, Smith SS, Piper ME, Loh WY, Fiore MC, Baker TB. Smoking cessation and the risk of diabetes mellitus and impaired fasting glucose: three-year outcomes after a quit attempt. PLoS One. 2014 Jun 3;9(6):e98278. doi: 10.1371/journal.pone.0098278. eCollection 2014.
Johnson HM, Piper ME, Baker TB, Fiore MC, Stein JH. Effects of smoking and cessation on subclinical arterial disease: a substudy of a randomized controlled trial. PLoS One. 2012;7(4):e35332. doi: 10.1371/journal.pone.0035332. Epub 2012 Apr 9.
Asthana A, Piper ME, McBride PE, Ward A, Fiore MC, Baker TB, Stein JH. Long-term effects of smoking and smoking cessation on exercise stress testing: three-year outcomes from a randomized clinical trial. Am Heart J. 2012 Jan;163(1):81-87.e1. doi: 10.1016/j.ahj.2011.06.023. Epub 2011 Nov 14.
Julius BR, Ward BA, Stein JH, McBride PE, Fiore MC, Colbert LH. Ambulatory activity associations with cardiovascular and metabolic risk factors in smokers. J Phys Act Health. 2011 Sep;8(7):994-1003.
Johnson HM, Gossett LK, Piper ME, Aeschlimann SE, Korcarz CE, Baker TB, Fiore MC, Stein JH. Effects of smoking and smoking cessation on endothelial function: 1-year outcomes from a randomized clinical trial. J Am Coll Cardiol. 2010 May 4;55(18):1988-95. doi: 10.1016/j.jacc.2010.03.002. Epub 2010 Mar 17.

Responsible Party: University of Wisconsin, Madison
ClinicalTrials.gov Identifier: NCT00332644     History of Changes
Obsolete Identifiers: NCT00109447
Other Study ID Numbers: P50DA19706-1
P50DA019706 ( U.S. NIH Grant/Contract )
First Submitted: June 1, 2006
First Posted: June 2, 2006
Results First Submitted: October 21, 2011
Results First Posted: November 30, 2011
Last Update Posted: November 30, 2011
Last Verified: October 2011

Additional relevant MeSH terms:
Tobacco Use Disorder
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Nicotine
Bupropion
Ganglionic Stimulants
Autonomic Agents
Peripheral Nervous System Agents
Physiological Effects of Drugs
Nicotinic Agonists
Cholinergic Agonists
Cholinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Antidepressive Agents, Second-Generation
Antidepressive Agents
Psychotropic Drugs
Dopamine Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Dopamine Agents
Cytochrome P-450 CYP2D6 Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Enzyme Inhibitors


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