To compare the clinical effectiveness, tolerability, and cost-effectiveness of topiramate to active control (naltrexone) on treatment outcomes for alcohol dependence in a double-blind randomised controlled trial.
Name: Topiramate
Name: Naltrexone
Description: Corroborated with Phosphatidylethanol (PEth) levels
Measure: Number of heavy drinking days, as measured by the Time Line Follow Back Time: Over 12 weeksDescription: Corroborated with PEth levels
Measure: Time to relapse, as measured by the Time Line Follow Back Time: Over 12 weeksDescription: Corroborated with PEth levels
Measure: Time to lapse, as measured by the Time Line Follow Back Time: Over 12 weeksDescription: Corroborated with PEth levels
Measure: Number of days abstinent, as measured by the Time Line Follow Back Time: Over 12 weeksDescription: Corroborated with PEth levels
Measure: Number of standard drinks per drinking day, as measured by the Time Line Follow Back Time: 12 weeksDescription: as reported by patient during weekly medical management sessions facilitated by the treating doctor.
Measure: Self report of adverse events Time: 12 weeksDescription: as measured by amount of time spent thinking and craving for alcohol, difficulty in resisting consumption of alcohol if present and hypothetical pleasure associated with consumption of alcohol.
Measure: Penn Alcohol Craving Scale for alcohol craving Time: 12 weeksDescription: as measured by cumulative score of anxiety related questions on the Depression, Anxiety Stress Scale-21 (DASS21).
Measure: DASS21 score for presence and/or severity of anxiety Time: 12 weeksDescription: as measured by cumulative score for depression related questions
Measure: DASS21 score for presence and/or severity of depression Time: 12 weeksDescription: as measured by cumulative score of satisfaction with current sleep patterns and extent to which sleep disturbances interfere and impair with every day activities and daily functioning
Measure: Insomnia Severity Index for sleep disturbances Time: 12 weeksDescription: as measured by fasting blood glucose levels in blood
Measure: Blood glucose test for diabetes Time: 12 weeksDescription: as measured by levels of liver enzymes, Alanine Transaminase (ALT), Alkaline Phosphatase (ALP) and Aspartate Transaminase (AST) in blood
Measure: Liver function tests for clinical markers of liver injury Time: 12 weeksDescription: as measured by weight in kilograms (kg) and height in metres (m). These two measurements will be combined together to report BMI in kg/m^2.
Measure: Body Mass Index Time: 12 weeksDescription: as measured using a scale of the likelihood of having a good time and feeling more relaxed if alcohol was consumed.
Measure: Self report of daily measures of expectancies, confidence and drinking Time: 12 weeksAllocation: Randomized
Parallel Assignment
There is one SNP
Investigators hypothesise that topiramate treated patients will be better able to achieve a reduction in heavy drinking and predict that, based on prior research, that the effects would be moderated by a single nucleotide polymorphism (rs2832407) in GRIK1.