The Effect of Naltrexone and Varenicline on Alcohol-Mediated Smoking Lapse

March 22, 2018 updated by: Sherry McKee, Yale University
The purpose of this study is to examine how medications thought to attenuate the effects of alcohol (naltrexone) and smoking cessation medications (varenicline) affect the ability to resist smoking and also subsequent ad-lib smoking, following a low-dose alcohol priming drink, in non-treatment seeking alcohol-drinking daily smokers.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

30

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Connecticut
      • New Haven, Connecticut, United States, 06519
        • Yale Center for Clinical Investigation, Yale University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

21 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • ages 21-55
  • ability to read and write in English
  • alcohol-drinking smokers

Exclusion Criteria:

  • any significant current medical conditions that would contraindicate smoking
  • current DSM-IV abuse or dependence of other substances, other than nicotine dependence or alcohol abuse.
  • positive test result at intake appointments on urine drug screens conducted for opiates, cocaine, or benzodiazepines
  • women who are pregnant or nursing
  • suicidal, homicidal or evidence of current severe mental illness
  • participants prescribed any psychotropic drug in the 30 days prior to study enrollment
  • blood donation within the past 6 weeks
  • individuals seeking treatment for smoking cessation or drinking or have attempted to quit smoking or drinking within the past 3 months
  • specific exclusion for administration of naltrexone not specified above including chronic pain conditions necessitating opioid treatment, and evidence of significant hepatocellular injury as evidenced by SGOT or SGPT > 3x normal or elevated bilirubin
  • known allergy to varenicline or taking H2blockers (e.g., Cimetidine)
  • participation within the past 8 weeks in other studies that involve additive blood sampling and/or interventional measures that would be considered excessive in combination with the current protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Factorial Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: naltrexone + varenicline
naltrexone (25mg) + varenicline (2mg)
Drug: naltrexone
25 mg/day, with 1-week lead-in medication period. The starting dose is 0 mg/day for days 1-3, followed by 12.5mg/day for day 4, followed by 25mg/day for days 5-7, plus during the laboratory session (day 8).
Drug: varenicline
2mg/day, with 1-week lead-in medication period. The starting dose is 0.5mg/day for days 1-2, followed by 0.5mg twice daily for days 3-5, followed by 1.0 mg twice daily for days 6-7, plus during the laboratory session (day 8).
Other Names:
  • Chantix
Experimental: varenicline
varenicline 2mg
Drug: varenicline
2mg/day, with 1-week lead-in medication period. The starting dose is 0.5mg/day for days 1-2, followed by 0.5mg twice daily for days 3-5, followed by 1.0 mg twice daily for days 6-7, plus during the laboratory session (day 8).
Other Names:
  • Chantix
Placebo Comparator: placebo
placebo control
Drug: placebo
placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Latency to Initiate Ad-lib Smoking Session
Time Frame: day 8
Time to smoking during the smoking delay task. Smoking delay task occurred on day 8 of the study. Range of time delay is 0 minutes to 50 minutes.
day 8

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Number of Cigarettes Smoked During the Ad-lib Period
Time Frame: day 8
Number of cigarettes smoked during the ad libitum phase of the smoking delay task. Task occurred on day 8 of the study.
day 8

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Yale University

Collaborators

National Institute on Alcohol Abuse and Alcoholism (NIAAA)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2008

Primary Completion (Actual)

November 1, 2016

Study Completion (Actual)

November 1, 2016

Study Registration Dates

First Submitted

October 14, 2008

First Submitted That Met QC Criteria

October 15, 2008

First Posted (Estimate)

October 16, 2008

Study Record Updates

Last Update Posted (Actual)

April 23, 2018

Last Update Submitted That Met QC Criteria

March 22, 2018

Last Verified

March 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HIC0710003188
  • P50AA015632 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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