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Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Caffeine and Cocaine

ClinicalTrials.gov ID: NCT00733993

Public ClinicalTrials.gov record NCT00733993. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:20 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

Experiment 1: Adenosine Receptor A2A Antagonists and Cocaine Dependence

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study is being done to find out if medicines that affect a neurotransmitter (chemical messenger) in the brain called adenosine improve behavioral problems that are related to drug abuse. Another purpose of the study is to find out how genes related to adenosine change how people respond to these medicines. More information about how these medicines change behaviors may be helpful to come up with new treatments for drug abuse.

Study identification

NCT ID
NCT00733993
Recruitment status
Completed
Study type
Interventional
Phase
Phase 1, Phase 2
Enrollment
23 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 55 Years
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Apr 2008 (Type not available)
Primary completion
Jul 2011 (Actual)
Completion
Oct 2011 (Actual)
Last update posted
Mar 22, 2017

2008 – 2011

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
The University of Texas Health Science Center, Houston Houston Texas 77030 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT00733993, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 22, 2017 · Synced Oct 21, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT00733993 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →