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Clinical Trial Summary

Varenicline is a partial nicotinic agonist which acts on alpha4 beta2 nicotinic receptors. It is presumed to alleviate withdrawal discomfort, but also to diminish rewarding effects of cigarettes. The standard varenicline dosing has been formulated to avoid adverse reactions (primarily nausea) in sensitive clients. The downside of this cautious approach is that a substantial proportion of clients may be under-dosed. A blanket dose increase would inevitably increase the incidence of side effects, but it is likely that tailoring varenicline dosing to clients' needs would be safe and may further increase varenicline's efficacy.

This study will recruit 200 smokers who report little change to their enjoyment of cigarettes and no nausea, during the first week of varenicline use. These smokers will be randomised to receive the standard dose plus placebo or plus individualised varenicline dose up to 5mg, titrated over the next week prior to their target quit day. Urges to smoke, and other withdrawal symptoms, experienced during the study period will be compared between groups to see if the tailored therapy may be useful.


Clinical Trial Description

n/a


Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT01206010
Study type Interventional
Source Queen Mary University of London
Contact
Status Completed
Phase Phase 3
Start date July 2011
Completion date February 2013

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