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Efficacy of D-Cycloserine for Enhancing the Effects of CBT for Substance Use

This study has been completed.
National Institute on Drug Abuse (NIDA)
Massachusetts General Hospital
Information provided by (Responsible Party):
Michael Otto, Boston University Identifier:
First received: January 31, 2007
Last updated: May 23, 2013
Last verified: April 2013
This study examines whether isolated doses of d-cycloserine enhance the efficacy of an exposure-based cognitive-behavioral treatment for chronic and treatment refractory substance dependence.

Condition Intervention Phase
Substance-Related Disorders
Drug: D-cycloserine
Drug: Placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Placebo-Controlled Evaluation of the Efficacy of D-Cycloserine for Enhancing the Effects of CBT for Substance Use

Resource links provided by NLM:

Further study details as provided by Boston University:

Primary Outcome Measures:
  • Toxicology screens for illicit substances [ Time Frame: Weekly ]

Secondary Outcome Measures:
  • Addiction Severity Index, Risk Behavior Survey, Hamilton Anxiety Inventory, Montgomery-Asberg Depression Rating Scale, Anxiety Sensitivity Index [ Time Frame: Baseline, Mid Treatment, End of Treatment, 1-Month Follow-up, 2-Month Follow-up ]

Enrollment: 36
Study Start Date: February 2007
Study Completion Date: June 2009
Primary Completion Date: June 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: I
DCS-augmented CBT-IC
Drug: D-cycloserine
Single dosage prior to each of 6 sessions of CBT-IC treatment (sessions 5-10)
Other Name: DCS
Placebo Comparator: II
Placebo-augmented CBT-IC
Drug: Placebo
Single dosage prior to each of 6 sessions of CBT-IC treatment (sessions 5-10)

Detailed Description:
This is a placebo-controlled trial of the efficacy of 50mg d-cycloserine or matching pill placebo for enhancing the efficacy of CBT.

Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

The primary selection criteria include women and men between the ages of 18 and 65 who:

  1. Meet DSM-IV criteria for opiate dependence,
  2. Maintain a stable dose of methadone for two weeks prior to recruitment and:

    • fail to achieve "take-home" status for methadone dosing during at least the first four months of methadone treatment,
    • test positive on at least two toxicology screens for illicit drugs during the month prior to recruitment
    • have never achieved two consecutive toxicology screens free of illicit substances since entering the current treatment episode.
  3. Meet study criteria for chronic stress:

    • unemployment criteria, and
    • affective disorder criteria.

Exclusion Criteria:

  1. Patients with significantly unstable or uncontrolled medical illness which may interfere with participation in treatment (e.g., patients likely to require hospitalization during the study period).
  2. Patients with a psychotic or organic mental disorder according to DSM-IV criteria.
  3. Patients receiving medication affecting methadone metabolism (e.g. rifampin).
  4. Patients with uncontrolled bipolar disorder as evidenced by meeting current criteria for mania or hypomania or meeting criteria for rapid cycling in the last year (as indicated by structured questioning of all patients meeting criteria for bipolar disorder).
  5. Patients unable to complete the informed consent or unable to understand study procedures in the informed consent process.
  6. Pregnancy or current alcohol use.
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Please refer to this study by its identifier: NCT00430573

United States, Massachusetts
Habit OPCO
Boston, Massachusetts, United States, 02118
Sponsors and Collaborators
Boston University
National Institute on Drug Abuse (NIDA)
Massachusetts General Hospital
Principal Investigator: Michael W. Otto, Ph.D. Boston University
  More Information

Responsible Party: Michael Otto, Ph.D., Boston University Identifier: NCT00430573     History of Changes
Other Study ID Numbers: R01 DA017904-S1
R01DA017904 ( US NIH Grant/Contract Award Number )
Study First Received: January 31, 2007
Last Updated: May 23, 2013

Keywords provided by Boston University:
cognitive-behavior therapy
cognitive enhancer
drug dependence
opiate dependence
isolated doses of d-cycloserine
isolated doses of matching pill placebo

Additional relevant MeSH terms:
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Anti-Infective Agents, Urinary
Anti-Infective Agents
Renal Agents
Antibiotics, Antitubercular
Antitubercular Agents
Anti-Bacterial Agents
Molecular Mechanisms of Pharmacological Action processed this record on April 25, 2017