Study: NCT02551692

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Nicotine Patch
Description: Participants will wear 21mg/day patches for days 1-14. After day 14, participants will make a quit attempt continue to wear the 21mg/d patches for 6 weeks, then step down to 14mg/d patches for 2 weeks and finally step down 7mg/d for the last 2 weeks of treatment. Participants will also take a placebo capsule. During days 8-14, participants will undergo 2 cue-exposure sessions.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Nicotine Patch
Description: Participants will wear 21mg/day patches for days 1-14. After day 14, participants will make a quit attempt continue to wear the 21mg/d patches for 6 weeks, then step down to 14mg/d patches for 2 weeks and finally step down 7mg/d for the last 2 weeks of treatment. Participants will also take a placebo capsule. During days 8-14, participants will undergo 2 cue-exposure sessions.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Varenicline
Description: Varenicline (VAR) will be administered by titrating to steady state levels over a 7 day induction period (.5 mg once daily in Days 1-3; .5 mg twice daily on Days 4-7 and 1 mg twice daily on Days 8-14). Participants will continue on 1mg twice daily until the end of treatment (days 15-84). Participants will also wear a placebo patch. During days 8-14, participants will undergo 2 cue-exposure sessions.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Placebo Nicotine Patch
Description: In the PLAC group, participants will receive placebo patches and placebo capsules for 14 days prior to quitting smoking. They will then switch to wearing a nicotine patch the morning of their quit day in order to provide them with the minimum standard of care. During days 8-14, participants will undergo 2 cue-exposure sessions.~In the VAR group, participants will wear a placebo patch while taking varenicline.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Placebo Nicotine Patch
Description: In the PLAC group, participants will receive placebo patches and placebo capsules for 14 days prior to quitting smoking. They will then switch to wearing a nicotine patch the morning of their quit day in order to provide them with the minimum standard of care. During days 8-14, participants will undergo 2 cue-exposure sessions.~In the VAR group, participants will wear a placebo patch while taking varenicline.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Placebo Capsule
Description: In the PLAC group, participants will receive placebo patches and placebo capsules for 14 days prior to quitting smoking. They will then switch to wearing a nicotine patch the morning of their quit day in order to provide them with the minimum standard of care. During days 8-14, participants will undergo 2 cue-exposure sessions.~In the NRT group, participants will take a placebo capsule while wearing nicotine patches.

Intervention type: DRUG
Group type: PLACEBO_COMPARATOR
Intervention: Placebo Capsule
Description: In the PLAC group, participants will receive placebo patches and placebo capsules for 14 days prior to quitting smoking. They will then switch to wearing a nicotine patch the morning of their quit day in order to provide them with the minimum standard of care. During days 8-14, participants will undergo 2 cue-exposure sessions.~In the NRT group, participants will take a placebo capsule while wearing nicotine patches.