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ClinicalTrials.gov public records Last synced May 21, 2026, 10:00 PM EDT

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 119 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Harm Reduction Clear all
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Opioid Overdose, Drug Overdose
Interventions
PROVIDENT
Behavioral
Lead sponsor
Brown University
Other
Eligibility
Not listed
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Opioid Use Disorder, Cigarette Smoking
Interventions
Telehealth Motivational Counseling, Nicotine Replacement Product, National Institute on Drug Abuse (NIDA) Standardized Research Electronic Cigarette (SREC).
Behavioral · Drug · Device
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years to 75 Years
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
New York, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Anxiety, No Evidence of Disease, Lung Carcinoma
Interventions
educational intervention, questionnaire administration, quality-of-life assessment, Best Practice
Other
Lead sponsor
City of Hope Medical Center
Other
Eligibility
55 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2018 · Synced May 21, 2026, 10:00 PM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
Alcohol Use
Interventions
Customizable personalized normative feedback (CPNF), Personalized normative feedback (PNF), Attention-Matched Control (AMC)
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 24 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Drug Use, Substance Abuse, Mental Illness
Interventions
Integrated Harm Reduction Intervention (IHRI)
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
3
States / cities
New Haven, Connecticut • New York, New York • Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced May 21, 2026, 10:00 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Alcohol Use, Alcohol Drinking, Drinking Behavior
Interventions
Smartphone breathalyzer device/app use, BAC estimator app use, Text messaging procedure
Device
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 25 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Dec 2, 2018 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Drink Too Much, Drinking, Binge, Drunk, Drug Use, Aggression, Aggression Sexual, Peer Group, Safety Issues, Harm Reduction
Interventions
Nightlife Safety Plans (NSP), Fire Safety
Behavioral
Lead sponsor
Pacific Institute for Research and Evaluation
Other
Eligibility
21 Years and older
Enrollment
959 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Substance Withdrawal Syndrome
Interventions
Abstinence from e-cigarettes
Behavioral
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
147 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Opioid Use Disorder, Harm Reduction, Health Promotion
Interventions
Peer Intervention, Enhanced Usual Care
Behavioral · Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
390 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
3
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Smoking, Cigarette
Interventions
JUUL, Treatment As Usual
Device · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 99 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 20, 2023 · Synced May 21, 2026, 10:00 PM EDT
Not listed Not applicable Interventional
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
HaRTC
Other
Lead sponsor
Washington State University
Other
Eligibility
21 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Tobacco Dependence
Interventions
SWITCH IT, E-cig Provision Only
Behavioral · Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
21 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Louisville, Kentucky • Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Electronic Cigarette Use, Smoking, Cigarette, Nicotine Dependence
Interventions
NJOY ACE e-cigarette
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
50 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Behavior
Interventions
On the Playground behavior management program
Behavioral
Lead sponsor
Oregon Center for Applied Science, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2,316 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 25, 2010 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Tobacco Use Disorder, Smoking
Interventions
e-cigarettes
Device
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years to 35 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 23, 2020 · Synced May 21, 2026, 10:00 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Smoking Cessation, Harm Reduction
Interventions
d-cycloserine, Juul e-cigarette
Drug · Other
Lead sponsor
Rose Research Center, LLC
Industry
Eligibility
22 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
2
States / cities
Charlotte, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced May 21, 2026, 10:00 PM EDT
Not yet recruiting Not applicable Interventional
View directory record Official record
Conditions
HIV, Substance Use Disorder (SUD)
Interventions
Substance use disorder screening, Social network intervention
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Male only
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Nicotine Dependence, Cigarettes, Uncomplicated
Interventions
Very Low Nicotine Content Cigarettes, Normal Nicotine Content Cigarettes
Drug
Lead sponsor
Brown University
Other
Eligibility
15 Years to 20 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
HIV Infections
Interventions
CHECKIT!
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
18 Years and older
Enrollment
493 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Harm Reduction, Opioid-use Disorder, Naloxone
Interventions
Nasal Spray Naloxone, Intramuscular Naloxone, Improvised Nasal Atomizer
Device
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years and older
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Jul 18, 2019 · Synced May 21, 2026, 10:00 PM EDT
Terminated Not applicable Interventional Results available
View directory record Official record
Conditions
Cigarette Smoking
Interventions
nicotine polacrilex, transdermal system or inhaler
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
OUD Telehealth Platform
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced May 21, 2026, 10:00 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Alcohol Use
Interventions
Mindfulness based relapse prevention
Behavioral
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced May 21, 2026, 10:00 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Occupational Health
Interventions
Stress First Aid for Harm Reduction Workers
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 100 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 13, 2025 · Synced May 21, 2026, 10:00 PM EDT