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Zonisamide vs. Placebo in the Treatment of Alcohol Dependence

This study has been completed.
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
National Center for Research Resources (NCRR)
Information provided by:
UConn Health Identifier:
First received: January 6, 2008
Last updated: September 28, 2010
Last verified: September 2010
Results First Received: May 15, 2010  
Study Type: Interventional
Study Design: Allocation: Randomized;   Intervention Model: Parallel Assignment;   Masking: Double Blind (Participant, Care Provider, Investigator);   Primary Purpose: Treatment
Conditions: Alcoholism
Alcohol Abuse
Alcohol Dependence
Interventions: Drug: zonisamide
Drug: Placebo

  Participant Flow
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Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
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Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
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Reporting Groups
Zonisamide Medication Treatment Subjects in this arm received the zonisamide anticonvulsant medication in double blind fashion starting with 100mg daily and titrated every other week to a target dose of 500mg daily. The pills were over-encapsulated to match the placebo.
Placebo Subjects in this arm received a double blind placebo lactose capsule identical to the over-capsule on the actual medicine. The titration of "dose" and number of pills matched that of the zonisamide arm.

Participant Flow:   Overall Study
    Zonisamide Medication Treatment   Placebo
STARTED   20   20 
COMPLETED   17   19 

  Baseline Characteristics

  Outcome Measures
  Show All Outcome Measures

1.  Primary:   Change in Number of Heavy Drinking Days (i.e., 5 or More Drinks Per Day for Men, and 4 or More Per Day for Women)Per Week, by Week   [ Time Frame: baseline to the end of 12 weeks in treatment ]

2.  Primary:   Weekly Rate of Change in Abstinent Days   [ Time Frame: baseline to the end of 12 weeks in treatment ]

3.  Secondary:   Change in Number of Drinks Per Week by Week   [ Time Frame: baseline to the end of 12 weeks in treatment ]

4.  Secondary:   Change in the Urge to Drink Alcohol as Measured by the Alcohol Urge Questionnaire (AUQ)   [ Time Frame: baseline to the end of 12 weeks in treatment ]

5.  Secondary:   Change in Gamma-glutamyl Transferase (GGT) Concentration   [ Time Frame: 12 weeks (from initiation to end of treatment) ]

  Serious Adverse Events

  Other Adverse Events

  Limitations and Caveats
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Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
The small sample size and the short duration of treatment are limitations. High rates of retention in the treatment and adherence to the medication regimen are strengths. The concomitant psychotherapy may have caused a ceiling effect on medication.

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Certain Agreements:  
All Principal Investigators ARE employed by the organization sponsoring the study.

Results Point of Contact:  
Name/Title: Albert J. Arias, M.D.
Organization: UCHC
phone: 8606794423 ext 4423

Responsible Party: Albert J. Arias, MD, University of Connecticut Health Center Identifier: NCT00595556     History of Changes
Other Study ID Numbers: 06-113-1
P50AA003510 ( US NIH Grant/Contract Award Number )
M01RR006192 ( US NIH Grant/Contract Award Number )
Study First Received: January 6, 2008
Results First Received: May 15, 2010
Last Updated: September 28, 2010