Can a Two-Drug combo break Cocaine's grip?
NCT ID NCT00567814
First seen Sep 18, 2026 · Last updated Sep 18, 2026
Summary
Researchers are testing whether two dose combinations of metyrapone and oxazepam can help adults with cocaine addiction. The study enrolls 45 people aged 18 to 50 who want treatment and have cocaine in their system. Participants take the drugs or a placebo twice daily for six weeks and visit the clinic twice a week for urine drug screens, safety checks, and questions about craving and mood. The main goal is to see whether the drugs reduce cocaine craving compared with placebo.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- a combination of metyrapone and oxazepam
- What this could lead to
- If it works, this could point toward a medication combination that helps people with cocaine addiction reduce craving and stay off the drug.
- What could go wrong
- This is a small, early study of 45 people over six weeks, so any benefit may not hold up in larger trials. Both drugs have side effects of their own, and treating addiction with medication often fails for many patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
45 people
The number who actually took part.
- Start date
-
Dec 2007
- Finished
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Nov 2008
- Lead sponsor
-
A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 to 65 years
- Sex
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Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Male or female, 18 - 50 years of age * Requests treatment for cocaine addiction * Meets the DSM-IV criteria for cocaine dependency * Able to provide written informed consent and comply with the study * Females of childbearing potential must have a negative pregnancy test and must be using adequate birth control during the study * Test positive for cocaine on a urinary drug screen * Healthy and medically stable in the opinion of the Principal Investigator Exclusion Criteria: * Liver enzymes greater than two times normal * Any history of hepatitis * History of disorders requiring chronic treatment with steroids * Significantly abnormal ECG * Any prominent DSM-IV axis I disorders other than cocaine dependence * Any subject who presents as a danger to self or others in the opinion of the Principal Investigator * Concomitant use of methamphetamine as determined by self-reporting and verified by measurement of methamphetamine in urinary drug screen * Alcohol consumption greater than 4 drinks per day (1 Drink = 12 oz beer; 5 oz wine; 1.5 oz shot of liquor) * Any clinically significant laboratory test abnormalities * Use of any concomitant medication during the study that would interfere with study medications * Serum cortisol less than 3 µg/dl at any time before or during study * Treatment with an investigational product within 30 days prior to study enrollment * Currently seeking other forms of professional addiction treatment * Known allergic reaction to oxazepam or metyrapone * Lactose intolerance
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Department of Psychiatry, Psychopharmacology Research Clinic
Shreveport, Louisiana, 71103, United States
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Other studies related to the condition(s) this trial covers.
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