A double-blind, placebo-controlled, randomized clinical trial of oral selegiline hydrochloride for smoking cessation in nicotine-dependent cigarette smokers☆
Abstract
Aim
The primary aim of this study was to determine the safety and efficacy of the monoamine oxidase-B (MAO-B) inhibitor selegiline hydrochloride (SEL, l-Deprenyl; Eldepryl®) as an aid for smoking cessation in cigarette smokers.
Methods
One hundred and one nicotine-dependent adult cigarette smokers without current psychiatric or substance use disorders participated in this 8-week randomized, double-blind, placebo-controlled trial. Participants received either SEL (5
mg bid, n
=
51) or placebo (PLO, n
=
50), in combination with brief (<10
min) manualized smoking cessation counseling. The main smoking outcome measures were 7-day point prevalence abstinence at end of trial (EOT), 4-week continuous smoking abstinence at end of trial (CA), and 7-day point prevalence abstinence at 6-month follow-up (6MFU). Abstinence was determined by an absence of self-reported cigarette smoking and biochemically verified by expired breath carbon monoxide and plasma cotinine levels.
Results
Rates of smoking abstinence did not differ by medication group (EOT: SEL
=
16%, PLO
=
20%, p
=
0.57; CA: SEL
=
14%, PLO
=
18%, p
=
0.56; 6MFU: SEL
=
12%, PLO
=
16%, p
=
0.54). Adverse events were modest and comparable between medication groups. Participants receiving SEL were more likely than those receiving PLO to report dry mouth (25.5% versus 8.2%, p
<
0.05).
Conclusions
Our results suggest that SEL was safe and well-tolerated by adult cigarette smokers, but did not improve smoking abstinence rates compared to PLO.
Keywords: Selegiline hydrochloride, Placebo-controlled trial, Smoking cessation, Nicotine dependence
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☆ The Clinicaltrials.gov Registration No. for this trial, “Usefulness of Selegiline as an Aid to Quit Smoking,” is NCT00129311.
PII: S0376-8716(09)00399-8
doi:10.1016/j.drugalcdep.2009.10.009
© 2009 Elsevier Ireland Ltd. All rights reserved.
