Varenicline and Combined NRT for Smoking Cessation

Inclusion Criteria

• Smoking 5 or more cigarettes, little cigars and/or cigarillos per day, on average, within the 2 months preceding the screening visit and expired carbon monoxide (CO) greater than or equal to 6 parts per million (ppm) (if less than or equal to 5, then positive cotinine test)
• Interested in treatment that might change smoking behavior
• Able to follow verbal and written instructions in English and complete all aspects of the study
• Provide informed consent and agree to all assessments and study procedures
• Have an address and telephone number where he/she may be reached
• Be the only participant in his/her household

Exclusion Criteria

• Within the month immediately preceding the screening visit, use of any form of tobacco products other than cigarettes, little cigars and/or cigarillos on 3 or more days within a week if the individual refuses to refrain from such tobacco use during the course of the study
• Current enrollment or plans to enroll in another smoking cessation program in the next 12 months
• Plan to use other nicotine substitutes (i.e., over-the-counter [OTC] or prescription medication for smoking cessation) or smoking cessation treatments in the next 12 months
• Uncontrolled hypertension (systolic blood pressure; [SBP] greater than 180 or diastolic blood pressure; [DBP] greater than 110)
• History of severe kidney disease (e.g. chronic or acute kidney failure) with creatinine clearance below 30 and/or severe liver disease with liver tests over 4 times the upper normal level
• Laboratory evaluations (kidney and liver) outside normal limits and of potential clinical significance in the opinion of the investigator
• Serious or unstable disease within the past 3 months
• History (last 3 months) of abnormal heart rhythms, cardiovascular disease (stroke, angina, heart attack) may result in ineligibility; these conditions will be evaluated on a case by case basis by the study physician
• Current use of certain medications: (1) smoking cessation meds (last 7 days), i.e., Wellbutrin, Bupropion, Zyban, nicotine replacement therapy (NRT), Chantix, (2) certain medications to treat depression (last 14 days), i.e. monoamine oxidase inhibitors (MAOIs) and Elavil (Amitriptyline), (3) a case by case determination will be made by study physician for medication on precautionary list, i.e. nitroglycerin, or (4) daily use of opioids for 30 days or more on phone screen or at screening is exclusionary however pro re nata (PRN) use is allowed (i.e., 3:7 days per week or less or if more frequent, use less than a month's duration)
• Meet criteria for the following psychiatric and/or substance use disorders as assessed by the MINI International Neuropsychiatric Interview (MINI): items C (current manic or hypomanic episode only), I (alcohol abuse - Alcohol Addendum - past 6 months only; current alcohol dependence), J (substance abuse - Substance Abuse Addendum - past 6 months only; current substance dependence), K (current/lifetime psychotic disorder or current/lifetime mood disorder with psychotic features); individuals who meet criteria for non-exclusionary psychiatric disorders that are considered clinically unstable and/or unsuitable to participate as determined by the principal investigator and/or study physician
• Individuals rated as moderate (9-16) to high (17 or greater) on suicidality as assessed by Module B of the MINI
• Psychiatric hospitalization within 1 year of screening date
• A positive urine pregnancy test during the screening period; women who are two years post-menopausal, or who have had a tubal ligation or a partial or full hysterectomy will not be subject to a urine pregnancy test
• Pregnant, breast-feeding or of childbearing potential and is not protected by a medically acceptable, effective method of birth control while enrolled in the study; medically acceptable contraceptives include: (1) approved hormonal contraceptives (such as birth control pills, patches, implants or injections), (2)