Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
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 are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 25, 2026, 4:13 AM EDT

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

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Guanfacine Clear all
Completed Phase 2 Interventional Accepts healthy volunteers

CRT-Guanfacine for SPD

NCT02524899
View directory record Official record
Conditions
Schizotypal Personality Disorder, SPD
Interventions
Cognitive Remediation Therapy, Guanfacine, Placebo
Behavioral · Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2017 · Synced Sep 25, 2026, 4:13 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Mechanistic Evaluation of Guanfacine on Drinking Behavior in Women and Men With Alcohol Use Disorders

NCT03764098
View directory record Official record
Conditions
Alcohol Use
Interventions
Guanfacine ER, Placebo
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
21 Years to 70 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Guanfacine Clinical Trial for Smoking Cessation

NCT02051309
View directory record Official record
Conditions
Smoking Cessation
Interventions
Guanfacine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 28, 2021 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

PK/PD Comparison of Guanfacine ER and IR

NCT01904526
View directory record Official record
Conditions
Smoking
Interventions
Guanfacine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 5, 2020 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 4 Interventional Results available

Electrophysiological Effects of Guanfacine Extended Release in Attention Deficit Hyperactivity Disorder (ADHD)

NCT01069523
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity
Interventions
Guanfacine Extended Release, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
6 Years to 12 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2012 · Synced Sep 25, 2026, 4:13 AM EDT
Not listed Not applicable Interventional

Guanfacine to Treat Borderline Personality Disorder

NCT00358969
View directory record Official record
Conditions
Borderline Personality Disorder
Interventions
guanfacine (Tenex)
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 31, 2006 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 2 Interventional Results available

Guanfacine to Improve Substance Use Outcomes in Women

NCT03980184
View directory record Official record
Conditions
Substance Use Disorders
Interventions
Guanfacine, Behavioral Counseling
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Ketamine and Guanfacine on Working Memory in Healthy Subjects

NCT01600885
View directory record Official record
Conditions
NMDA Receptor Function
Interventions
Guanfacine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
3
States / cities
New Haven, Connecticut • West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 20, 2017 · Synced Sep 25, 2026, 4:13 AM EDT
Recruiting Phase 1 Interventional

Combined Guanfacine and Mindfulness Meditation as an Adjunct to Buprenorphine Maintenance in Opioid Use Disorder

NCT06642181
View directory record Official record
Conditions
Mindfulness, Guanfacine, Opioid Use Disorder
Interventions
Guanfacine pharmacotherapy, Mindfulness Oriented Recovery Enhancement (MORE)
Drug · Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 55 Years
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 4 Interventional Results available

Neurobiological Basis of Response to Guanfacine Extended Release in Children and Adolescents With ADHD

NCT01709695
View directory record Official record
Conditions
ADHD, Attention Deficit Hyperactivity Disorder
Interventions
Guanfacine Hydrochloride XR, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
8 Years to 15 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 13, 2018 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 1 Interventional Results available

Open-Label Pilot Study of Guanfacine-Extended Release for the Treatment of Cannabis Dependence

NCT01467999
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Guanfacine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 4, 2019 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 4 Interventional Results available

Intuniv vs Placebo in the Treatment of Childhood Intermittent Explosive Disorder

NCT02048241
View directory record Official record
Conditions
Intermittent Explosive Disorder, Childhood Aggression, Oppositional Defiant Disorder, Attention Deficit Disorder
Interventions
Parent Management Training, Placebo, Intuniv
Behavioral · Other · Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
6 Years to 12 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Sep 25, 2026, 4:13 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

Guanfacine for Hyperactivity in Children With Down Syndrome (HYPEbeGONE_DS)

NCT06042257
View directory record Official record
Conditions
Hyperactivity in Children With Down Syndrome, Impulsivity in Children With Down Syndrome
Interventions
Guanfacine Hydrochloride Immediate Release, Placebo
Drug
Lead sponsor
Rachel G. Greenberg, MD, MB, MHS
Other
Eligibility
6 Years to 12 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
14
States / cities
Phoenix, Arizona • Atlanta, Georgia • Chicago, Illinois + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Guanfacine Immediate-release Electrocardiogram Results (QTc) Study

NCT00672984
View directory record Official record
Conditions
Healthy Volunteers
Interventions
immediate release guanfacine hydrochloride, moxifloxacin, Placebo
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years to 45 Years
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jun 13, 2021 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 1 Interventional

Guanfacine for the Treatment of Post Traumatic Stress Disorder (PTSD)

NCT00018603
View directory record Official record
Conditions
Post-Traumatic Stress Disorder
Interventions
guanfacine
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2002
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 3 Interventional

DORADO-AC - Optimized Doses of Darusentan as Compared to an Active Control in Resistant Hypertension

NCT00389779
View directory record Official record
Conditions
Hypertension
Interventions
Darusentan, Guanfacine, Darusentan Placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
35 Years to 80 Years
Enrollment
849 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
87
States / cities
Birmingham, Alabama • Huntsville, Alabama • Montgomery, Alabama + 70 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2014 · Synced Sep 25, 2026, 4:13 AM EDT
Not listed Phase 4 Interventional

Guanfacine Adjunctive Treatment to Atypical Antipsychotics for Cognitive Dysfunction in Schizophrenia

NCT00469664
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Cognitive Impairment
Interventions
Guanfacine/Tenex
Drug
Lead sponsor
Research Foundation for Mental Hygiene, Inc.
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2008
U.S. locations
3
States / cities
New York, New York • The Bronx, New York • W. Brentwood, New York
Source: ClinicalTrials.gov public record
Updated May 20, 2008 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 1 Interventional

Guanfacine to Reduce Stress-Induced Cocaine/Alcohol Craving and Relapse

NCT00585754
View directory record Official record
Conditions
Cocaine Dependent, Alcohol Dependent
Interventions
Guanfacine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 29, 2016 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 3 Interventional Results available

Dose-optimization in Adolescents Aged 13-17 Diagnosed With Attention-deficit/Hyperactivity Disorder (ADHD) Using Extended-release Guanfacine HCl

NCT01081132
View directory record Official record
Conditions
Attention-Deficit/Hyperactivity Disorder
Interventions
Extended-release Guanfacine Hydrochloride, Placebo
Drug · Other
Lead sponsor
Shire
Industry
Eligibility
13 Years to 17 Years
Enrollment
314 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
54
States / cities
Dothan, Alabama • Little Rock, Arkansas • Rolling Hills Estates, California + 49 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2021 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Extended-release Guanfacine Hydrochloride in Children and Adolescents Aged 6-17 Years With Attention-Deficit/Hyperactivity Disorder (ADHD)

NCT01244490
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
Extended-release Guanfacine Hydrochloride, Atomoxetine Hydrochloride, Placebo Comparator
Drug
Lead sponsor
Shire
Industry
Eligibility
6 Years to 17 Years
Enrollment
338 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
11
States / cities
San Diego, California • Maitland, Florida • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 25, 2026, 4:13 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

An fMRI Study of Stimulant vs. Non-Stimulant Treatment of ADHD

NCT02259517
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder
Interventions
Guanfacine, Lisdexamfetamine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
6 Years to 17 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 2 Interventional Results available

Efficacy of Guanfacine and Lidocaine Combination in Trigeminal Nerve Block for Pain Management in Trigeminal Neuropathy

NCT03865940
View directory record Official record
Conditions
Trigeminal Neuralgia
Interventions
Lidocaine, Guanfacine
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Sep 25, 2026, 4:13 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Pharmacology of Cognition in Schizotypal Personality Disorder

NCT00353379
View directory record Official record
Conditions
Schizotypal Personality Disorder, Personality Disorders
Interventions
Guanfacine, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 60 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 1997
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Sep 25, 2026, 4:13 AM EDT
Completed Phase 3 Interventional Results available

Tolerability and Efficacy of AM and PM Once Daily Dosing With Extended-release Guanfacine Hydrochloride in Children 6-12 With Attention-Deficit/Hyperactivity Disorder (ADHD) (The ADHD Tempo Study)

NCT00997984
View directory record Official record
Conditions
Attention-Deficit/Hyperactivity Disorder
Interventions
extended-release guanfacine hydrochloride (SPD503), placebo, extended-release guanfacine hydrochloride
Drug
Lead sponsor
Shire
Industry
Eligibility
6 Years to 12 Years
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
42
States / cities
Little Rock, Arkansas • El Centro, California • Rolling Hills Estates, California + 38 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2021 · Synced Sep 25, 2026, 4:13 AM EDT