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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Harm reduction services Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Suubi4PrEP: Improving PrEP Access and Adherence Among Adolescent Girls and Young Women in Uganda

NCT07002866
View directory record Official record
Conditions
HIV Prevention
Interventions
HIV Risk Reduction (HIVRR), PrEP Peer Supporters (PS), Matched Savings Accounts + Financial Literacy (FL)
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
15 Years to 24 Years · Female only
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Video-Based Intervention in Reducing Anxiety in Patients Undergoing Lung Cancer Screening

NCT02288416
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 Sep 24, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Reducing Overdose and Substance Use-related Stigma by Training Non-substance-using Friends and Family Members of People Who Use Opioids to Be Harm Reduction Champions

NCT06823453
View directory record Official record
Conditions
Opioid Overdose Prevention, People Who Use Opioids/People With Opioid Use Disorder (OUD), Reduction of Substance Use-related Stigma, Non-substance-using People With a Friend or Family Member Who Uses Opioids, Peer Harm Reduction Support Champions
Interventions
Peer Harm Reduction Support Champion Intervention
Behavioral
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Recruiting Phase 3 Interventional

Electronic Harm Reduction Treatment for Alcohol

NCT06702007
View directory record Official record
Conditions
Alcohol Use Disorder, Harm Reduction, Housing First (eg. Permanent Supportive Housing)
Interventions
eHaRT-A
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
21 Years and older
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Sep 24, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Data2Action Oregon Project: Supporting Data-driven Decision-Making for Substance Use Services, Policy, and Overdose Prevention

NCT06852170
View directory record Official record
Conditions
Substance Abuse, Decision Making, Shared, Implementation Science, Decision Making, Organizations, Substance-related Disorders, Policy
Interventions
Co-Design Sessions (CDS), Data products
Other
Lead sponsor
Chestnut Health Systems
Other
Eligibility
18 Years and older
Enrollment
341 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional

The MOUD Plus Pilot: Counseling and Peer Support to Support Retention for Medically Complex Patients With Opioid Use Disorder Seen In Primary Care

NCT06837662
View directory record Official record
Conditions
Opioid Dependence, Substance Abuse Disorders, Complex Medical Patients, Primary Care Patients With Chronic Conditions
Interventions
MOUD "Plus" Intervention (treatment as usual + coordinated counseling and referral to community based peer), Treatment As Usual (primary care with low threshold MOUD prescribing)
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional

School Health Center Healthy Adolescent Relationship Program

NCT01678378
View directory record Official record
Conditions
Adolescent Relationship Abuse
Interventions
SHARP Intervention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 19 Years
Enrollment
1,012 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Apr 26, 2015 · Synced Sep 24, 2026, 5:35 AM EDT
Not listed Not applicable Interventional

Harm Reduction Talking Circles for American Indians and Alaska Natives With Alcohol Use Disorders

NCT04267692
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 Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact on Opioid Use of Bundling Medication-assisted Treatment With mHealth

NCT02712034
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
MAT + A-CHESS, MAT
Behavioral · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
417 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 13, 2020 · Synced Sep 24, 2026, 5:35 AM EDT
Active, not recruiting Not applicable Interventional

Open Pilot Trial of Adapted Cognitive Processing Therapy for Comorbid PTSD and Opioid Use Disorder

NCT06872164
View directory record Official record
Conditions
Posttraumatic Stress Disorder (PTSD), Opioid Use Disorder
Interventions
Cognitive Processing Therapy
Behavioral
Lead sponsor
The City College of New York
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional

Tele-Harm Reduction

NCT05208697
View directory record Official record
Conditions
IV Drug Usage, HIV Infections, Hepatitis C
Interventions
Tele-Harm Reduction, off-site linkage
Behavioral · Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
3
States / cities
Fort Lauderdale, Florida • Miami, Florida • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional

Overdose Recovery and Care Access (ORCA) Qualitative Stakeholder Interviews and County-level Data

NCT06768814
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Use
Interventions
Sub-acute stabilization
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
40,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional

OPTIONS: A Patient-Centered HIV Prevention Decision Aid for PrEP Uptake for Women With Substance Use in Treatment Settings

NCT03651453
View directory record Official record
Conditions
HIV Infections, Substance Abuse
Interventions
Decision aid, Standard care
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Female only
Enrollment
164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 27, 2021 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional

Minority AIDS Initiative Retention and Re-Engagement Project

NCT01616940
View directory record Official record
Conditions
HIV/AIDS
Interventions
Enhanced Peer Intervention
Behavioral
Lead sponsor
Boston University
Other
Eligibility
18 Years and older
Enrollment
348 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
3
States / cities
Miami, Florida • Boston, Massachusetts • Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Mar 21, 2017 · Synced Sep 24, 2026, 5:35 AM EDT
Active, not recruiting Not applicable Interventional

Integrated Care and Treatment for Severe Infectious Diseases and Substance Use Disorders Among Hospitalized Patients

NCT05688423
View directory record Official record
Conditions
Injection Site Infection, Substance Use Disorders
Interventions
SIRI Team, Treatment as Usual
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
480 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
6
States / cities
Birmingham, Alabama • Miami, Florida • Tampa, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Tailored Tobacco Quitline for Rural Veterans

NCT01592695
View directory record Official record
Conditions
Cigarette Smoking
Interventions
Nicotine replacement therapy - transdermal nicotine patch, Tailored behavioral intervention, Tobacco quit line referral, Nicotine replacement therapy - nicotine gum, Nicotine replacement therapy - nicotine lozenge, Bupropion Sustained Release, Varenicline, Combination pharmacotherapy - transdermal nicotine patch + nicotine gum, Combination pharmacotherapy - transdermal nicotine patch + nicotine lozenge, Combination pharmacotherapy - transdermal nicotine patch + bupropion, Alcohol use risk reduction, Behavioral activation for the treatment of depression, Behavioral management of post-cessation weight gain
Drug · Behavioral
Lead sponsor
Iowa City Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 99 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 1, 2019 · Synced Sep 24, 2026, 5:35 AM EDT
Enrolling by invitation Phase 2 Interventional Accepts healthy volunteers

PATH (Peer Advanced Training in Harm Reduction) to Reducing Burnout Among Peers Who Deliver Harm Reduction Services (R61 Phase Pilot)

NCT07218562
View directory record Official record
Conditions
Burnout, Compassion Satisfaction, Secondary Trauma
Interventions
PATH (Peer Advanced Training in Harm reduction)
Behavioral
Lead sponsor
Chestnut Health Systems
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

PrEP at a Syringe Services Program

NCT04782180
View directory record Official record
Conditions
Hiv, Substance Use Disorders
Interventions
Descovy 200Mg 25Mg Tablet, PrEP
Drug · Behavioral
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Sep 24, 2026, 5:35 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Clinical Alternatives for Reducing Harm Using E-cigarettes

NCT07039292
View directory record Official record
Conditions
Smoking, E-Cig Use, Oncology
Interventions
Harm Reduction (E-cigarette switching), Standard of Care
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
21 Years and older
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Recruiting Not applicable Interventional

The ENHANCE Project Toolkit

NCT07649278
View directory record Official record
Conditions
Substance Related Disorder, Drug Overdose, eHealth
Interventions
Connections mHealth Application
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Kentucky Communities and Researchers Engaging to Halt the Opioid Epidemic (CARE2HOPE)

NCT04134767
View directory record Official record
Conditions
Substance Use, HIV Infections, HCV Infection, Sexually Transmitted Infections (Not HIV or Hepatitis), Overdose, Drug, Opioid Use
Interventions
Health Linkage, Overdose Education
Behavioral
Lead sponsor
April M Young
Other
Eligibility
18 Years and older
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Sep 24, 2026, 5:35 AM EDT
Withdrawn Phase 4 Interventional

Elimination of HCV Through Linkage and In Prison Treatment of Incarcerated Populations (ECLIPSE)

NCT04235049
View directory record Official record
Conditions
HCV Infection
Interventions
Glecaprevir/pibrentasvir
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Sep 24, 2026, 5:35 AM EDT
Completed Not applicable Interventional Results available

Ending Transmission of HIV, HCV, and STDs and Overdose in Rural Communities of People Who Inject Drugs (ETHIC)

NCT04427202
View directory record Official record
Conditions
HIV, Hepatitis C, Opioid-use Disorder, Injection Drug Use
Interventions
Referral to harm reduction services
Behavioral
Lead sponsor
University of Chicago
Other
Eligibility
15 Years and older
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Carbondale, Illinois • Murphysboro, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 11, 2024 · Synced Sep 24, 2026, 5:35 AM EDT
Active, not recruiting Not applicable Interventional

The Ganchero Intervention for Migrant People Who Inject Drugs From Puerto Rico in New York City

NCT06316739
View directory record Official record
Conditions
HIV Infections, HCV, Overdose
Interventions
Ganchero intervention
Behavioral
Lead sponsor
North Jersey AIDS Alliance dba North Jersey Community Research Initiative (NJCRI)
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 24, 2026, 5:35 AM EDT