- Conditions
- Alcohol Dependence
- Interventions
- Prazosin Tablet, Placebo Tablet
- Drug
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2019
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 35
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Pheochromocytoma, Paraganglioma
- Interventions
- Phenoxybenzamine, Doxazosin
- Drug
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 39 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2021
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Urinary Retention
- Interventions
- Prazosin given 6 hours prior to catheter removal in the 24 hour group
- Drug
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 142 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2017
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Alzheimer's Disease, Disruptive Behavior
- Interventions
- Prazosin, Placebo oral capsule
- Drug
- Lead sponsor
- Alzheimer's Disease Cooperative Study (ADCS)
- Other
- Eligibility
- Not listed
- Enrollment
- 35 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2022
- U.S. locations
- 14
- States / cities
- Sun City, Arizona • Los Angeles, California • San Diego, California + 10 more
- Conditions
- Post-Traumatic Headache
- Interventions
- Prazosin, Placebo
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 89 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2023
- U.S. locations
- 2
- States / cities
- Seattle, Washington • Tacoma, Washington
- Conditions
- PTSD, Sleep Disorders
- Interventions
- prazosin, placebo
- Drug · Other
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 304 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 15
- States / cities
- Loma Linda, California • Long Beach, California • Palo Alto, California + 12 more
- Conditions
- Alzheimer Disease, Psychomotor Agitation
- Interventions
- prazosin, placebo (inert substance)
- Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- Not listed
- Enrollment
- 24 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2001 – 2009
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Anxiety Disorders, Mood Disorders, Insomnia, Nightmares
- Interventions
- Behavioral Sleep Intervention, Prazosin, Placebo
- Behavioral · Drug
- Lead sponsor
- University of Pittsburgh
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2011
- U.S. locations
- 1
- States / cities
- Pittsburgh, Pennsylvania
- Conditions
- Alcoholism
- Interventions
- Prazosin medication, Placebo medication
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 92 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2014
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Erectile Dysfunction
- Interventions
- Tamsulosin and avanafil, Doxazosin and avanafil
- Drug
- Lead sponsor
- VIVUS LLC
- Industry
- Eligibility
- 40 Years to 65 Years · Male only
- Enrollment
- 48 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010
- U.S. locations
- 1
- States / cities
- Tempe, Arizona
- Conditions
- Cannabis Dependence, Posttraumatic Stress Disorder, Cannabis Use Disorder
- Interventions
- Prazosin Hydrochloride
- Drug
- Lead sponsor
- VA Puget Sound Health Care System
- Federal
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 11 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2025
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Alcohol Use Disorder, Posttraumatic Stress Disorder (PTSD)
- Interventions
- Prazosin, Naltrexone, Placebo (Prazosin), Placebo (Naltrexone)
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Stress Disorders, Post-Traumatic, Combat Disorders, Sleep Disorders
- Interventions
- prazosin hydrochloride, placebo
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 67 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2013
- U.S. locations
- 2
- States / cities
- Seattle, Washington • Tacoma, Washington
- Conditions
- Hypertension, Heart Failure
- Interventions
- Prazosin HCl 2mg, Prazosin HCl 1 mg, Prazosin HCl 5 mg
- Drug
- Lead sponsor
- Pfizer
- Industry
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 72 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- San Antonio, Texas
- Conditions
- Post-Traumatic Stress Disorder, Sleep Initiation and Maintenance Disorders
- Interventions
- Prazosin, Placebo, Psychotherapy
- Drug · Behavioral
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2003 – 2010
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- PTSD
- Interventions
- doxazosin, Perindopril, Placebo
- Drug
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Hypertension
- Interventions
- Hydrochlorothiazide, Lisinopril, Lisinopril and Hydrochlorothiazide, Nifedipine XL, Metoprolol tartrate, Atenolol, Valsartan, Doxazosin, Clonidine, Hydralazine, Metoprolol succinate, Amlodipine
- Drug
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 25 Years to 80 Years
- Enrollment
- 99 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Posttraumatic Stress Disorder
- Interventions
- Prazosin, Placebos
- Drug
- Lead sponsor
- University of Colorado, Denver
- Other
- Eligibility
- 18 Years to 50 Years · Female only
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2021
- U.S. locations
- 1
- States / cities
- Aurora, Colorado
- Conditions
- Alcoholism
- Interventions
- prazosin
- Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 23 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2007
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Alcohol Abuse, Posttraumatic Stress Disorder
- Interventions
- Prazosin, Placebo medication
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2012
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Stress Disorders, Post-Traumatic, Bulimia Nervosa
- Interventions
- Prazosin, Placebo
- Drug
- Lead sponsor
- Milton S. Hershey Medical Center
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 9 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Hershey, Pennsylvania
- Conditions
- Posttraumatic Stress Disorder
- Interventions
- prazosin hydrochloride, placebo
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 18 Years to 65 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Cocaine Dependence
- Interventions
- Doxazosin, Modafinil, cocaine, Placebo
- Drug
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 45 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Posttraumatic Stress Disorder, Alcohol Use Disorders
- Interventions
- doxazosin, placebo
- Drug
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- Not listed
- Enrollment
- 144 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina