- 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
Search Results
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 25–48
of 24
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Substance-Related Disorders
- Interventions
- Sugar Pill, Doxazosin
- Drug
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 11 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2016
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Alzheimer's Disease
- Interventions
- Prazosin, Placebo
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- Not listed
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2014
- 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
- Stress Disorders, Post-Traumatic
- Interventions
- Doxazosin Mesylate, Extended Release, Placebo
- Drug
- Lead sponsor
- San Francisco Veterans Affairs Medical Center
- Federal
- Eligibility
- 18 Years to 75 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2024
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Stress Disorders, Post-Traumatic
- Interventions
- Doxazosin XL
- Drug
- Lead sponsor
- San Francisco Veterans Affairs Medical Center
- Federal
- Eligibility
- 18 Years to 69 Years
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- San Francisco, California
- 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
- Cocaine Dependence
- Interventions
- Doxazosin, Placebo
- Drug
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 96 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2015
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Cocaine Addiction, Cocaine Abuse, Cocaine Dependence, Substance Abuse
- Interventions
- Placebo, Doxazosin
- Drug
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 13 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Cigarette Smoking, Alcohol Use Disorders
- Interventions
- Varenicline, Prazosin, Placebo
- Drug
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 5 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Alcoholism, Cocaine Dependence
- Interventions
- Prazosin, placebo
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2009
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Cocaine Dependence
- Interventions
- Doxazosin, Placebo
- Drug · Other
- Lead sponsor
- Baylor College of Medicine
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 35 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Alcoholism
- Interventions
- Doxazosin, Placebo
- Drug · Other
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 61 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2020
- U.S. locations
- 1
- States / cities
- Madison, Wisconsin
- Conditions
- Posttraumatic Stress Disorder, Depression, Alcohol-Related Disorders, Suicidal Ideation, Substance-Related Disorders, Mild Cognitive Impairment, Quality of Life, Pain, Wounds and Injury, Brain Injuries, Chronic Disease
- Interventions
- Motivational Interviewing, Cognitive Behavioral Therapy Elements, Care Management, Fluoxetine, Fluvoxamine, Paroxetine, Sertraline, Citalopram, Venlafaxine, Duloxetine, Mirtazapine, Diphenhydramine, Trazodone, Prazosin
- Behavioral · Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 635 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2019
- U.S. locations
- 24
- States / cities
- Scottsdale, Arizona • Beverly Hills, California • Sacramento, California + 20 more
- Conditions
- Kidney Stones
- Interventions
- Alfuzosin, nifedipine, doxazosin, prazosin
- Drug
- Lead sponsor
- United States Naval Medical Center, San Diego
- Federal
- Eligibility
- 18 Years and older
- Enrollment
- 240 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- San Diego, California
- Conditions
- Cardiovascular Diseases, Heart Diseases, Hypertension, Coronary Disease, Myocardial Infarction
- Interventions
- Chlorthalidone, Lisinopril, Amlodipine, Doxazosin
- Drug
- Lead sponsor
- Donna Arnett, 257-5678
- Other
- Eligibility
- 55 Years and older
- Enrollment
- 37,939 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1999 – 2005
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Sleep Disorders, Stress Disorders, Post-Traumatic
- Interventions
- Paroxetine, Prazosin, placebo
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 210 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2009
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- COVID-19
- Interventions
- Prazosin, Standard of care
- Drug · Other
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 45 Years to 85 Years
- Enrollment
- 5 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Smoking
- Interventions
- Doxazosin 4mg/day, Placebo, Doxazosin 8mg/day
- Drug
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 35 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Stress Disorders, Post-Traumatic, Sleep Disorders
- Interventions
- prazosin, paroxetine, Placebo
- Drug
- Lead sponsor
- Seattle Institute for Biomedical and Clinical Research
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 59 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2004 – 2008
- U.S. locations
- 2
- States / cities
- Washington D.C., District of Columbia • Fort Lewis, Washington
- Conditions
- Alcohol Use Disorder
- Interventions
- Prazosin, Placebo
- Drug
- Lead sponsor
- University of New Mexico
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2017
- U.S. locations
- 1
- States / cities
- Albuquerque, New Mexico
- 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
- Hypertension, Stress, Psychological, Blood Pressure
- Interventions
- Prazosin, Placebo
- Drug
- Lead sponsor
- Augusta University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2019
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- Conditions
- Hypertension, COVID
- Interventions
- ACEI/ARB, Non-ACEI/ARB, ACEI, ARB
- Drug
- Lead sponsor
- University of Utah
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 22,213 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah