Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Nicotine Delivery From Novel Non-tobacco Electronic Systems (ENDS)
Brief Summary: This randomized pilot clinical trial studies nicotine delivery from novel non-tobacco electronic system (ENDS) in smokers. Studying the levels of nicotine delivered by various types and brands of ENDS to the bloodstream, and comparing this to the levels delivered from conventional cigarettes (the participant's own brand) may help provide information about the use of nicotine-containing products that may help inform/reform current tobacco policy, practice, and harm reduction approaches.


Options:
A: Arm Label: Electronic cigarette condition; Type: EXPERIMENTAL; Interventions: Drug: Electronic cigarette with nicotine (ECwN) plus placebo tablets of varenicline | Arm Label: Varenicline condition; Type: ACTIVE_COMPARATOR; Interventions: Drug: Electronic cigarette without nicotine (ECwN) plus active varenicline tablets | Arm Label: Placebo condition; Type: PLACEBO_COMPARATOR; Interventions: Drug: Electronic cigarette without nicotine (ECwoN) plus placebo tablets of varenicline | Intervention Type: DRUG; Name: Electronic cigarette without nicotine (ECwN) plus active varenicline tablets; Assigned to Arm(s): Varenicline condition | Intervention Type: DRUG; Name: Electronic cigarette without nicotine (ECwoN) plus placebo tablets of varenicline; Assigned to Arm(s): Placebo condition | Intervention Type: DRUG; Name: Electronic cigarette with nicotine (ECwN) plus placebo tablets of varenicline; Assigned to Arm(s): Electronic cigarette condition
B: Arm Label: Arm I (different type of ENDS product at each visit); Type: EXPERIMENTAL; Interventions: Other: Electronic Cigarette, Other: Laboratory Biomarker Analysis, Other: Pharmacological Study, Other: Questionnaire Administration | Arm Label: Arm II (BLU e-cigarette ENDS product with different flavors); Type: EXPERIMENTAL; Interventions: Other: Electronic Cigarette, Other: Laboratory Biomarker Analysis, Other: Pharmacological Study, Other: Questionnaire Administration | Intervention Type: OTHER; Name: Electronic Cigarette; Assigned to Arm(s): Arm I (different type of ENDS product at each visit) | Intervention Type: OTHER; Name: Electronic Cigarette; Assigned to Arm(s): Arm II (BLU e-cigarette ENDS product with different flavors) | Intervention Type: OTHER; Name: Laboratory Biomarker Analysis; Assigned to Arm(s): Arm I (different type of ENDS product at each visit), Arm II (BLU e-cigarette ENDS product with different flavors) | Intervention Type: OTHER; Name: Pharmacological Study; Assigned to Arm(s): Arm I (different type of ENDS product at each visit), Arm II (BLU e-cigarette ENDS product with different flavors) | Intervention Type: OTHER; Name: Questionnaire Administration; Assigned to Arm(s): Arm I (different type of ENDS product at each visit), Arm II (BLU e-cigarette ENDS product with different flavors)
C: Arm Label: Usual Care; Type: ACTIVE_COMPARATOR; Interventions: Behavioral: Usual Care | Arm Label: Brief Treatment; Type: EXPERIMENTAL; Interventions: Behavioral: Brief Intervention | Arm Label: Extended Treatment; Type: EXPERIMENTAL; Interventions: Behavioral: Extended Treatment | Intervention Type: BEHAVIORAL; Name: Brief Intervention; Assigned to Arm(s): Brief Treatment | Intervention Type: BEHAVIORAL; Name: Extended Treatment; Assigned to Arm(s): Extended Treatment | Intervention Type: BEHAVIORAL; Name: Usual Care; Assigned to Arm(s): Usual Care
D: Arm Label: Nicotine-inclusive e-cigarettes; Type: EXPERIMENTAL; Interventions: Other: Electronic Cigarette and behavioural change support. | Arm Label: Nicotine-free e-cigarettes; Type: EXPERIMENTAL; Interventions: Other: Nicotine-Free Electronic Cigarette and behavioural change support. | Arm Label: Nicotine Replacement Therapy (NRT); Type: ACTIVE_COMPARATOR; Interventions: Other: Nicotine Replacement Therapy and behavioural change support. | Intervention Type: OTHER; Name: Electronic Cigarette and behavioural change support.; Assigned to Arm(s): Nicotine-inclusive e-cigarettes | Intervention Type: OTHER; Name: Nicotine-Free Electronic Cigarette and behavioural change support.; Assigned to Arm(s): Nicotine-free e-cigarettes | Intervention Type: OTHER; Name: Nicotine Replacement Therapy and behavioural change support.; Assigned to Arm(s): Nicotine Replacement Therapy (NRT)

Answer: B