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Clinical trialNCT00208143CompletedPhase 4Interventional

Seroquel Therapy for Substance Use Disorders Comorbid With Schizophrenia

SponsorCreighton UniversityEnrollment20Schizoaffective DisorderSchizophreniaSubstance AbuseSubstance Dependence
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

It is hypothesized that the atypical antipsychotic, Seroquel, will cause significant reduction in drug and alcohol cravings in patients with schizophrenia and comorbid cocaine and/methamphetamine dependence compared to the atypical antipsychotic, risperidone (Risperdal). Patients treated with Seroquel will have less use of cocaine and/or methamphetamine as measured by the Time Line Follow-back, over a 24-week follow-up period.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Creighton University Psychiatry and Research Center

    Omaha, Nebraska, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

Quetiapine →Risperidone →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
30 Nov 2003
Primary completion
—
Completion
31 Dec 2005
Last update posted
13 Dec 2007
Registered enrollment
20
Registry id
NCT00208143
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.