Journal
NICOTINE & TOBACCO RESEARCH
Volume 15, Issue 1, Pages 139-148Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ntr/nts101
Keywords
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Funding
- Pfizer, Inc.
- National Institute on Drug Abuse [T32-DA07209]
- NATIONAL INSTITUTE ON DRUG ABUSE [T32DA007209] Funding Source: NIH RePORTER
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Varenicline (Chantix (R)) is an efficacious first-line medication for smoking cessation. Studies suggest that one mechanism by which varenicline facilitates sustained smoking abstinence is by reducing the likelihood of relapse to smoking when a lapse, or slip, occurs during a quit attempt. The present study extends this line of research by conducting a prospective laboratory study to examine the relapse prevention effects of varenicline following a programmed lapse. Daily smokers (N = 47) completed a 5-week outpatient study in which they were randomized to receive varenicline or placebo. The first week was a medication induction period that was immediately followed by a 4-week quit attempt. A programmed lapse (2 cigarettes smoked in the laboratory) occurred on the second day of the quit attempt. Participants receiving varenicline were slower to relapse and had greater total abstinence rates following lapse exposure. Participants in the varenicline group rated lapse cigarettes lower on measures of reward and intoxication and showed increased behavioral economic demand elasticity for cigarettes (reduced cigarette purchasing at higher prices) compared with those receiving placebo. These results demonstrate a relapse prevention effect of varenicline following smoking lapse exposure and suggest that an attenuation of reward from smoking and the blunting of subjective effects of smoking may underlie and/or contribute to this effect.
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