Clinical laboratory assessment of the abuse liability of an electronic cigarette.
OBJECTIVE
To provide an initial abuse liability assessment of an electronic cigarette (EC) in current tobacco cigarette smokers.


METHODS
The first of four within-subject sessions was an EC sampling session that involved six, 10-puff bouts (30 seconds inter-puff interval), each bout separated by 30 minutes. In the remaining three sessions participants made choices between 10 EC puffs and varying amounts of money, 10 EC puffs and a varying number of own brand cigarette (OB) puffs, or 10 OB puffs and varying amounts of money using the multiple-choice procedure (MCP). The MCP was completed six times at 30-minute intervals, and one choice was reinforced randomly at each trial.


METHODS
Clinical laboratory.


METHODS
Twenty current tobacco cigarette smokers.


METHODS
Sampling session outcome measures included plasma nicotine, cardiovascular response and subjective effects. Choice session outcome was the cross-over value on the MCP.


RESULTS
EC use resulted in significant nicotine delivery, tobacco abstinence symptom suppression and increased product acceptability ratings. On the MCP, participants chose to receive 10 EC puffs over an average of $1.06 or three OB puffs and chose 10 OB puffs over an average of $1.50 (P < 0.003).


CONCLUSIONS
Electronic cigarettes can deliver clinically significant amounts of nicotine and reduce cigarette abstinence symptoms and appear to have lower potential for abuse relative to traditional tobacco cigarettes, at least under certain laboratory conditions.
Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA 23298, USA.
Andrea R
AR
Vansickel
Michael F
MF
Weaver
Thomas
T
Eissenberg
D000293:Adolescent; D000328:Adult; D002248:Carbon Monoxide / Q000032:analysis; D002755:Choice Behavior; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009538:Nicotine / Q000378:metabolism; D012907:Smoking / Q000097:blood; D000074606:Smoking Prevention; D011795:Surveys and Questionnaires; D061485:Tobacco Use Cessation Devices / Q000009:adverse effects*; D014029:Tobacco Use Disorder / Q000097:blood / Q000209:etiology*; D055815:Young Adult
D009538:Nicotine; D002248:Carbon Monoxide