Please select the eligibility criteria that correspond to the clinical trial below.
Title: Naltrexone and Varenicline: Weight Gain and Tolerability in Smokers
Brief Summary: The purpose of this study is to determine whether the combination of naltrexone (Depade) and varenicline (Chantix) minimizes post-smoking cessation weight gain and how well the combination is tolerated.


Options:
A: Inclusion Criteria:

1. Age: 18-65 years old
2. Smoking: \>/= 5 cigarettes per day within the 2 months preceding the screening visit and expired CO greater than or equal to 6 ppm.
3. Able to follow verbal and written instructions in English and complete all aspects of the study
4. Have an address and home telephone number where they may be reached
5. Provide informed consent and agree to all assessments and study procedures
6. Be the only participant in their household

Exclusion Criteria:

1. Within the month immediately preceding the screening visit; use of any form of tobacco product other than cigarettes on 3 or more days within a week only if the individual refuses to refrain from non-cigarette tobacco use during the course of this study
2. Within the month immediately preceding the screening visit; use of marijuana in any form on 3 or more days within a week
3. Within the two weeks immediately preceding the screening visit, involvement on more than 3 days in any formal smoking cessation activities
4. Current visual or auditory problems that in the opinion of the investigator would interfere with the completion of study assessments
5. Treatment on a continuous basis within 2 weeks before the screening visit: any contraindicated medication for Varenicline or Bupropion.
6. Uncontrolled hypertension or other major contraindications for Bupropion or Varenicline.
7. Severe renal impairment (CR Clearance \<30 ml/min/1.73 m2).
8. Laboratory evaluations outside normal limits and of potential clinical significance in the opinion of the investigator
9. Meet current criteria for psychiatric disorders or substance abuse as assessed by the MINI for items A, B, D, I, J, K, L, M and N, including a past manic or hypomanic episode as well as a lifetime psychotic disorder.
10. Subject rated as moderate to high on suicidality as assessed by the MINI.
11. Psychiatric hospitalization within 1 year of screening date.
12. A positive urine pregnancy test during the screening period. Women who are two years post menopausal, one year post-tubal ligation, or who have had a partial or full hysterectomy will not be subject to a urine pregnancy test.
13. Pregnant, breast-feeding, or of childbearing potential who is not protected by a medically acceptable, effective method of birth control while enrolled in the study
14. Use of Varenicline or Bupropion within two weeks before the screening visit.
15. History of hypersensitivity or allergic reaction to Varenicline, tricyclic antidepressant, Bupropion (Wellbutrin, Zyban) or similar chemical classes or any component of these formulations.
16. Subject considered by the investigator as unsuitable candidate for receipt of an investigational drug, or unstable to be followed up throughout the entire duration of the study.
B: Inclusion Criteria:

1. Smokers smoking at least 10 cigarettes/day (factory made or roll-your-own) in the past year
2. Aged 18 to 70 years
3. Motivated to quit defined as a score \> 5 on a visual rating scale ranging from 0 (not motivated at all) to 10 (extremely motivated)
4. Signed written informed consent
5. Understanding and speaking French
6. Women of childbearing age can be included if they use an effective contraceptive method: either hormonal contraception or an intrauterine device started at least one month before the first research visit
7. Individual affiliated to a health insurance system as defined by the sponsor (except Aide Médicale d'État =AME)
8. Previous failure of nicotine replacement therapy for smoking cessation

Exclusion Criteria:

1. any unstable disease condition within the last 3 months defined by the investigator as major change in symptoms or treatments such as 1.1.recent myocardial infarction, 1.2.unstable or worsening angina 1.3.severe cardiac arrhythmia 1.4.unstable or uncontrolled arterial hypertension 1.5.recent stroke 1.6.cerebrovascular disease 1.7.obliterative peripheral arterial disease 1.8.cardiac insufficiency 1.9.diabetes 1.10.hyperthyroidism 1.11.pheochromocytoma 1.12.severe hepatic insufficiency 1.13.history of seizures 1.14.severe depression 1.15.chronic obstructive pulmonary disease (COPD)
2. any life threatening condition with life-expectancy of less than 3 months
3. alcohol use disorder defined as a score ≥ 10 on the AUDIT-C questionnaire
4. abuse of or dependence on illegal drugs in the last 6 months revealed by the medical history
5. regular use of tobacco products other than cigarettes
6. current or previous (last 6 months) use of electronic cigarette
7. pregnant women
8. breastfeeding women
9. protected adults
10. current or past 3 months participation in another interventional research
11. current or past (last 3 months) use of smoking cessation medication such as varenicline, bupropion, nicotine replacement therapies
12. known lactose intolerance (placebo tablets contain lactose)
13. hypersensitivity to the active substance or to any of the excipients
14. known severe renal failure
C: Inclusion Criteria:

* Current cigarette smoker
* Averages at least 10 cigarettes/day for 5 or more years
* DSM-IV diagnosis of Nicotine Dependence
* Breath carbon monoxide \> 6 ppm
* Motivated to quit: score \> 8 on Contemplation Ladder
* Age \> 18 years

Exclusion Criteria:

* Current illicit substance use
* Other tobacco use (e.g., cigar, pipe)
* History of psychosis
* Past or current cardiovascular disease
* Impaired renal functioning
* Pregnancy
* Nursing
* Current treatment for smoking cessation
* Clinically significant depressive symptoms (CES-D \> 16)
* Current suicidal ideation
D: Inclusion Criteria:

1. Between the ages of 18 and 75
2. Smoking 10 or more cigarettes per day
3. Fewer than 3 months of smoking abstinence in the past year
4. Motivated to stop smoking

Exclusion Criteria:

1. Current use of opiates, and/or a urine toxicology screen positive for opiates
2. Chronic pain conditions necessitating opioid treatment (naltrexone, an opioid antagonist will make these medications ineffective)
3. Evidence of significant hepatocellular injury as evidence by AST or ALT \>3 x normal or elevated bilirubin
4. History of cirrhosis
5. Any serious or unstable disease within 6 months
6. Seizure risk
7. Diabetes mellitus requiring insulin or oral hypoglycemic medications
8. Hepatic or renal impairment
9. Use of a monoamine oxidase inhibitor in the prior 14 days
10. Clinically significant cardiovascular disease within 6 months
11. Uncontrolled hypertension
12. Baseline systolic blood pressure higher than 150 mm Hg or diastolic blood pressure higher than 95 mm Hg
13. Severe chronic obstructive pulmonary disease
14. History of cancer (except treated basal cell or squamous cell carcinoma of the skin)
15. History of clinically significant allergic reactions
16. Major depressive disorder within the past year requiring treatment
17. History of or current panic disorder, psychosis, bipolar disorder, or eating disorders
18. Alcohol or drug abuse/dependency within the past year
19. Use of another investigational drug within 30 days
20. Intention to donate blood or blood products during the treatment phase of the study
21. Use of tobacco products other than cigarettes or use of marijuana
22. Use of nicotine replacement therapy, clonidine, varenicline, bupropion, or nortriptyline within the month prior to enrollment or intention to use medication that might interfere with study medication
23. Body Mass Index (calculated as weight in kilograms divided by the square of height in meters) less than 15 or greater than 38 or weight less than 45 kg.
24. Females of childbearing potential who are pregnant, nursing, or not practicing effective contraception (oral injectable, or implantable contraceptives, intrauterine device, or barrier method with spermacide)

Answer: D