alexa Oral topiramate for treatment of alcohol dependence: a randomised controlled trial.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Johnson BA, AitDaoud N, Bowden CL, DiClemente CC, Roache JD,

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Abstract BACKGROUND: Topiramate, a sulphamate fructopyranose derivative, might antagonise alcohol's rewarding effects associated with abuse liability by inhibiting mesocorticolimbic dopamine release via the contemporaneous facilitation of gamma-amino-butyric acid activity and inhibition of glutamate function. We aimed to see whether topiramate was more effective than placebo as a treatment for alcohol dependence. METHODS: We did a double-blind randomised controlled 12-week clinical trial comparing oral topiramate and placebo for treatment of 150 individuals with alcohol dependence. Of these 150 individuals, 75 were assigned to receive topiramate (escalating dose of 25-300 mg per day) and 75 had placebo as an adjunct to weekly standardised medication compliance management. Primary efficacy variables were: self-reported drinking (drinks per day, drinks per drinking day, percentage of heavy drinking days, percentage of days abstinent) and plasma gamma-glutamyl transferase, an objective index of alcohol consumption. The secondary efficacy variable was self-reported craving. FINDINGS: At study end, participants on topiramate, compared with those on placebo, had 2.88 (95\% CI -4.50 to -1.27) fewer drinks per day (p=0.0006), 3.10 (-4.88 to -1.31) fewer drinks per drinking day (p=0.0009), 27.6\% fewer heavy drinking days (p=0.0003), 26.2\% more days abstinent (p=0.0003), and a log plasma gamma-glutamyl transferase ratio of 0.07 (-0.11 to -0.02) less (p=0.0046). Topiramate-induced differences in craving were also significantly greater than those of placebo, of similar magnitude to the self-reported drinking changes, and highly correlated with them. INTERPRETATION: Topiramate (up to 300 mg per day) is more efficacious than placebo as an adjunct to standardised medication compliance management in treatment of alcohol dependence. This article was published in Lancet and referenced in Journal of Genetic Syndromes & Gene Therapy

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