Topiramate-Phentermine Combinations for Cocaine Dependence

NCT ID: NCT02239913

Last Updated: 2019-11-27

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

38 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-09-30

Study Completion Date

2019-09-30

Brief Summary

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This study will determine the influence of topiramate (Topamax®) and phentermine (Adipex®), alone and in combination, on the reinforcing, subjective and physiological effects of cocaine.

Detailed Description

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Conditions

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Cocaine Use Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

FACTORIAL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors

Study Groups

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Placebo

Subjects will be maintained on oral placebo. Subjects will be maintained on placebo and phentermine during placebo maintenance. Cocaine will be administered acutely during placebo maintenance. Placebo will be administered acutely during placebo maintenance.

Group Type PLACEBO_COMPARATOR

Cocaine

Intervention Type DRUG

The pharmacodynamic effects of cocaine will be determined during maintenance on placebo and topiramate.

Placebo

Intervention Type DRUG

The pharmacodynamic effects of placebo will be determined during maintenance on placebo and topiramate.

Phentermine

Intervention Type DRUG

The pharmacodynamic effects of phentermine maintenance will be determined during maintenance on placebo and topiramate.

Topiramate Dose 1

Subjects will be maintained on the low topiramate dose. Subjects will be maintained on placebo and phentermine during maintenance on the low dose of topiramate. Cocaine will be administered acutely during placebo maintenance. Placebo will be administered acutely during placebo maintenance.

Group Type EXPERIMENTAL

Cocaine

Intervention Type DRUG

The pharmacodynamic effects of cocaine will be determined during maintenance on placebo and topiramate.

Placebo

Intervention Type DRUG

The pharmacodynamic effects of placebo will be determined during maintenance on placebo and topiramate.

Phentermine

Intervention Type DRUG

The pharmacodynamic effects of phentermine maintenance will be determined during maintenance on placebo and topiramate.

Topiramate

Intervention Type DRUG

The pharmacodynamic effects of chronic topiramate will be determined.

Topiramate Dose 2

Subjects will be maintained on the high topiramate dose. Subjects will be maintained on placebo and phentermine during maintenance on the high dose of topiramate. Cocaine will be administered acutely during placebo maintenance. Placebo will be administered acutely during placebo maintenance.

Group Type EXPERIMENTAL

Cocaine

Intervention Type DRUG

The pharmacodynamic effects of cocaine will be determined during maintenance on placebo and topiramate.

Placebo

Intervention Type DRUG

The pharmacodynamic effects of placebo will be determined during maintenance on placebo and topiramate.

Phentermine

Intervention Type DRUG

The pharmacodynamic effects of phentermine maintenance will be determined during maintenance on placebo and topiramate.

Topiramate

Intervention Type DRUG

The pharmacodynamic effects of chronic topiramate will be determined.

Interventions

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Cocaine

The pharmacodynamic effects of cocaine will be determined during maintenance on placebo and topiramate.

Intervention Type DRUG

Placebo

The pharmacodynamic effects of placebo will be determined during maintenance on placebo and topiramate.

Intervention Type DRUG

Phentermine

The pharmacodynamic effects of phentermine maintenance will be determined during maintenance on placebo and topiramate.

Intervention Type DRUG

Topiramate

The pharmacodynamic effects of chronic topiramate will be determined.

Intervention Type DRUG

Other Intervention Names

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Adipex® Topamax®

Eligibility Criteria

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Inclusion Criteria

* Recent cocaine use by the intranasal or intravenous route

Exclusion Criteria

* Abnormal screening outcome (e.g., ECG, blood chemistry result) that study physicians deem clinically significant
* Current or past histories of substance abuse or dependence that are deemed by the study physicians to interfere with study completion
* History of serious physical disease, current physical disease, impaired cardiovascular functioning, chronic obstructive pulmonary disease, history of seizure or current or past histories of serious psychiatric disorder that in the opinion of the study physician would interfere with study participation will be excluded from participation
* Females not currently using effective birth control
* Contraindications to cocaine, topiramate or phentermine
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Institute on Drug Abuse (NIDA)

NIH

Sponsor Role collaborator

University of Kentucky

OTHER

Sponsor Role lead

Responsible Party

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Craig Rush

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Craig R Rush, Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Kentucky

Locations

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University of Kentucky Medical Center

Lexington, Kentucky, United States

Site Status

Countries

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United States

Other Identifiers

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R01DA032254

Identifier Type: NIH

Identifier Source: secondary_id

View Link

BED IN 27

Identifier Type: -

Identifier Source: org_study_id

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