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  • Title: A randomized controlled trial of adding the nicotine patch to rimonabant for smoking cessation: efficacy, safety and weight gain.
    Author: Rigotti NA, Gonzales D, Dale LC, Lawrence D, Chang Y, CIRRUS Study Group.
    Journal: Addiction; 2009 Feb; 104(2):266-76. PubMed ID: 19149823.
    Abstract:
    AIMS: Because smoking cessation rates might be improved by combining drugs and by reducing post-cessation weight gain, we tested the smoking cessation efficacy, safety and effect on body weight of adding the nicotine patch to rimonabant, a cannabanoid type-1 receptor antagonist that reduces body weight. DESIGN: Randomized double-blind placebo-controlled trial. SETTING: Fifteen US research centers. PARTICIPANTS: A total of 755 smokers (> OR = 15 cigarettes/day). Intervention Rimonabant (20 mg daily) was given open-label for 9 weeks. The 735 participants completing week 1 were randomized at day 8 (target quit day) to add a nicotine patch (n = 369) or placebo patch (n = 366) for 10 weeks (21 mg daily for 8 weeks plus a 2-week taper). Participants received weekly smoking counseling and were followed for 24 weeks. MEASUREMENTS: Biochemically validated 4-week continuous abstinence at end-of-treatment (weeks 6-9; primary end-point); 7-day point prevalence abstinence at weeks 9 and 24; sustained abstinence (weeks 6-24); change in body weight; and adverse events. FINDINGS: Rimonabant plus nicotine patch was superior to rimonabant plus placebo in validated continuous abstinence at weeks 6-9 (39.0% versus 21.3%; odds ratio 2.36, 95% confidence interval: 1.71-2.37; P < 0.01) and in all other efficacy measures. Mean end-of-treatment weight gain among quitters did not differ between groups (0.04 kg for combination versus 0.49 kg for rimonabant only, P = 0.15) and was similar in weight-concerned smokers. Serious adverse event rates did not differ between groups. Depression- and anxiety-related adverse events occurred in 32 (4.2%) and 44 (5.8%) subjects, respectively; eight (1.1%) and nine (1.2%) subjects stopped the drug due to depression and anxiety, respectively. CONCLUSIONS: Adding a nicotine patch to rimonabant was well tolerated and increased smoking cessation rates over rimonabant alone. There was little post-cessation weight gain in either group, even among weight-concerned smokers, during drug treatment.
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