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Dextroamphetamine as Adjunct in Cocaine/Opiate Dependent Patients - 3

This study has been completed.
University of Texas
Information provided by:
National Institute on Drug Abuse (NIDA) Identifier:
First received: September 20, 1999
Last updated: August 11, 2008
Last verified: August 2008
The purpose of this study is to evaluate dextroamphetamine sulfate (sustained release) as an adjunct in concurrent cocaine and opiate dependent patients.

Condition Intervention Phase
Cocaine-Related Disorders
Opioid-Related Disorders
Drug: Dextroamphetamine
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: Dextroamphetamine as an Adjunct in Cocaine/Opiate Dependent Patients

Resource links provided by NLM:

Further study details as provided by National Institute on Drug Abuse (NIDA):

Primary Outcome Measures:
  • Craving
  • Drug use
  • Medication compliance
  • Retention
  • Addiction severity
  • Mood indicators
  • Psychiatric interview

Secondary Outcome Measures:
  • Effectiveness measures including psycho-social variables, side effects, and self-reported measures.

Estimated Enrollment: 140
Study Start Date: September 1994
Estimated Study Completion Date: September 2001
Detailed Description:
This 27-week double-blind, placebo controlled treatment is designed to evaluate dextroamphetamine sulfate (sustained release) as an adjunct in concurrent cocaine and opiate dependent patients. All subjects will receive methadone. For the treatment of cocaine dependence, subjects will receive one of 2 doses of dextroamphetamine (15 or 30mg) or placebo. After 4 weeks of treatment the dose level of dextroamphetamine is doubled (30 or 60mg). This dose is maintained for 20 weeks; during which subjects attend twice weekly visits to the clinic and receive weekly cognitive behavioral therapy. Follow up evaluations will be conducted out to 3 months post treatment. Subjects will be assisted in transferring to Houston area methadone clinics to maintain treatment for opiate dependence following treatment completion.

Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria- Subject must:

  • Exhibit cocaine and opiate dependence through a DSM-IV diagnosis as determined by SCID.
  • Be between 18 and 45 years old
  • Women must agree to use contraception
  • Have an EKG that has been confirmed by a cardiologist
  • Give a cocaine positive urine during screening - Present with evidence of opiate withdrawal

Exclusion Criteria- Subject must not:

• Have a serious medical illness including, but not limited to the following: Hypertension Significant heart disease Clinically significant cardiovascular abnormality Angina Hepatic, renal, or gastrointestinal disorders that could result in an altered metabolism or excretion of study agent

  • Have any Axis I disorder that is not related to drug use
  • Have current dependence on any psychoactive disorder other than nicotine
  • Be on probation or parole for reasons other than those related to drug charges (ASI)
  • Be pregnant or lactating
  • Have been in any outside treatment in 3 months
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00000306

United States, Texas
University of Texas Health Science Center
Houston, Texas, United States, 77225
Sponsors and Collaborators
National Institute on Drug Abuse (NIDA)
University of Texas
Principal Investigator: John Grabowski, Ph.D. University of Texas
  More Information Identifier: NCT00000306     History of Changes
Other Study ID Numbers: NIDA-09262-3  P50-09262-3 
Study First Received: September 20, 1999
Last Updated: August 11, 2008
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Opioid-Related Disorders
Cocaine-Related Disorders
Pathologic Processes
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Anesthetics, Local
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Vasoconstrictor Agents
Dopamine Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Dopamine Agents
Neurotransmitter Agents
Central Nervous System Stimulants processed this record on October 21, 2016