Completed

Dextroamphetamine as an Adjunct in Cocaine/Opiate Dependent Patients

0 criteria met from your profileSee at a glance how your profile meets each eligibility criteria.
What is being tested

Data Collection

Who is being recruted

Narcotic-Related Disorders+3

+ Mental Disorders

+ Opioid-Related Disorders

From 18 to 45 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
Study Start: September 1994
See protocol details

Summary

Principal SponsorNational Institute on Drug Abuse (NIDA)
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: September 1, 1994

Actual date on which the first participant was enrolled.

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.

Official TitleDextroamphetamine as an Adjunct in Cocaine/Opiate Dependent Patients
NCT00000306
Principal SponsorNational Institute on Drug Abuse (NIDA)
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

140 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.


Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 18 to 45 Years

Range of ages for which participants are eligible to join.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Narcotic-Related DisordersMental DisordersOpioid-Related DisordersSubstance-Related DisordersCocaine-Related DisordersChemically-Induced Disorders

Criteria

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

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Suspended

University of Texas Health Science Center

Houston, United StatesOpen University of Texas Health Science Center in Google Maps
CompletedOne Study Center
Dextroamphetamine as an Adjunct in Cocaine/Opiate Dependent Patients | PatLynk