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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Overdose Risk Clear all
Active, not recruiting Not applicable Interventional

Developing and Evaluating a Machine-Learning Opioid Overdose Prediction & Risk-Stratification Tool in Primary Care

NCT06810076
View directory record Official record
Conditions
Opiate Overdose, Opioid-Related Disorders, Narcotic-Related Disorders, Substance-related Disorders, Chemically-Induced Disorders, Mental Disorders
Interventions
Machine Learning-Based Clinical Decision Support: Overdose Prevention Alert (OPA) Intervention
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
674 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Completed No phase listed Observational

Stimulant Overdose in the Medicaid Population: Who is at Risk, and When Are They at Risk

NCT05976984
View directory record Official record
Conditions
Stimulant Overdose
Interventions
Aim 1 (case-cohort study), Aim 2 (case-crossover study), Aim 3 (cohort study)
Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
634,939 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 21, 2025 · Synced Sep 4, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional

Removing Barriers: Community Partnering for Innovative Solutions to the Opioid Crisis

NCT05665179
View directory record Official record
Conditions
Opioid Use Disorder, Alcohol Use Disorder, Health Risk Behaviors, Criminal Behavior, Housing Problems, Overdose of Opiate
Interventions
Removing Barriers to Recovery
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Ann Arbor, Michigan • Ypsilanti, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 28, 2024 · Synced Sep 4, 2026, 6:21 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Maternal Risk Factors for Autism Spectrum Disorders: A Case-Control Approach

NCT05453708
View directory record Official record
Conditions
Autism, Autism Spectrum Disorder, Autistic Disorder, Pregnancy Related, Diet, Healthy, Diet; Deficiency, Folate Deficiency, Folic Acid Deficiency, Folic Acid Overdose
Interventions
Survey
Other
Lead sponsor
Walden University
Other
Eligibility
18 Years and older · Female only
Enrollment
239 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 19, 2023 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Smartphone Intervention for Overdose and COVID-19

NCT05518461
View directory record Official record
Conditions
Substance Use Disorders, Overdose, COVID-19
Interventions
iThrive WI Intervention
Device
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional

Risks and Benefits of Naloxone Prescribing

NCT02535494
View directory record Official record
Conditions
Opioid Overdose
Interventions
Extensive training
Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 65 Years
Enrollment
405 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 4, 2026, 6:21 AM EDT
Active, not recruiting Not applicable Interventional

A Universal Primary Care Based Intervention to Reduce Youth Overdose Risk

NCT07022717
View directory record Official record
Conditions
Overdose
Interventions
Brief youth overdose prevention education, Information about Naloxone, Usual standard of care
Behavioral · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
13 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional

Impact of Direct Outreach to Expand Access to Naloxone in the Context of Standing Orders

NCT03241771
View directory record Official record
Conditions
Opioid Abuse, Overdose, Risk Behavior
Interventions
Naloxone Navigator 1.0
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Phase 4 Interventional Results available

Project OOPEN: Opioid Overdose Prevention, Education and Intervention

NCT01788306
View directory record Official record
Conditions
Opioid Overdose
Interventions
OOPEN+BBCC
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 70 Years
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
3
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 10, 2022 · Synced Sep 4, 2026, 6:21 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Kentucky Outreach Service Kiosk (KyOSK): Reducing HIV, HCV, and Overdose Risk

NCT05657106
View directory record Official record
Conditions
Opioid-Related Disorders, Hepatitis C (HCV), Human Immunodeficiency Virus (HIV), Drug Overdose, Substance Abuse, Intravenous Drug Usage, Opiate Substitution Treatment, Sexually Transmitted Diseases
Interventions
Health kiosk
Behavioral
Lead sponsor
April M Young
Other
Eligibility
18 Years and older
Enrollment
752 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional

AWAITS: A Web-based E-health Application for Active Illicit Opioid Users

NCT03402672
View directory record Official record
Conditions
Opioid-use Disorder, IV Drug Usage, Overdose, Drug Addiction, Substance Use Disorders
Interventions
self-administered, e-health application
Other
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Sep 4, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional

TRTME: Improving Outpatient Initiation of Medication for Opioid Use Disorder Following Hospitalization

NCT07780097
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Use Disorder, Moderate, Opioid Use Disorder, Severe
Interventions
TRTME
Behavioral
Lead sponsor
T. John Winhusen, PhD
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Kentucky Women's Justice Community Overdose Innovation Network - Phase II

NCT07179614
View directory record Official record
Conditions
Overdose Risk, Opioid Use Disorder, Stimulant Use Disorders
Interventions
Overdose Prevention Intervention Package (OPIP)
Behavioral
Lead sponsor
Michele Staton
Other
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
2
States / cities
Harlan, Kentucky • Hyden, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Not yet recruiting Not applicable Interventional

A Universal Primary Care Based Intervention to Reduce Youth Overdose Risk Aim 3

NCT07797933
View directory record Official record
Conditions
Overdose
Interventions
Brief youth overdose prevention education, Usual Standard of Care
Behavioral · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
13 Years and older
Enrollment
648 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Patient and Caregiver Attitudes and Beliefs Regarding Prescription of Intranasal Naloxone Spray for Opioid Overdose

NCT04129138
View directory record Official record
Conditions
Caregiver, Patient
Interventions
Survey Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Recruiting Phase 2Phase 3 Interventional Accepts healthy volunteers

Naltrexone for Overdose Prevention

NCT06633900
View directory record Official record
Conditions
Overdose Accidental
Interventions
IM naltrexone, Usual Care
Drug · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Trauma-informed Intervention to Reduce Substance Use and to Support Community Transition

NCT06651528
View directory record Official record
Conditions
Substance Use Disorder (SUD)
Interventions
TAU + TRUST, TAU + TRUST + Re-entry Recovery Support, Treatment as Usual (TAU)
Behavioral · Other
Lead sponsor
Michele Staton
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
264 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
4
States / cities
Frankfort, Kentucky • Pewee Valley, Kentucky • Chillicothe, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional

The OPT-IN Project

NCT03526380
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Behavioral: the OPT-IN Intervention
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 12, 2020 · Synced Sep 4, 2026, 6:21 AM EDT
Not yet recruiting Not applicable Interventional

Homeless Overdose Prevention- Expansion

NCT07716202
View directory record Official record
Conditions
Homelessness, Opioid Education and Naloxone Distribution (OEND), Substance Use Disorder
Interventions
Homeless Overdose Prevention- Expansion (HOPE) - Low Intensity, Homeless Overdose Prevention- Expansion (HOPE) - High Intensity
Behavioral
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 4, 2026, 6:21 AM EDT
Not listed Not applicable Interventional

The Impact of a Web-Based Naloxone Intervention Under Standing Orders to Patients Prescribed Chronic Opioid Therapy

NCT03337009
View directory record Official record
Conditions
Overdose, Risk Behavior
Interventions
Naloxone Navigator (NN)
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
1,004 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 19, 2024 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Rapid Self-Testing to Prevent Fentanyl Overdose Among Young People Who Use Drugs

NCT03373825
View directory record Official record
Conditions
Accidental Overdose of Opiate
Interventions
Take home rapid drug test
Behavioral
Lead sponsor
Brown University
Other
Eligibility
18 Years to 35 Years
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Sep 4, 2026, 6:21 AM EDT
Not listed No phase listed Observational

Overdose Risk Management and Naloxone

NCT03933345
View directory record Official record
Conditions
Opioid Use
Interventions
Study provides naloxone to participants who wish to have it. Not required to accept naloxone and no control.
Other
Lead sponsor
National Development and Research Institutes, Inc.
Other
Eligibility
18 Years and older
Enrollment
600 participants
Timeline
2019 – 2023
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 30, 2019 · Synced Sep 4, 2026, 6:21 AM EDT
Completed Not applicable Interventional

The Impact of Co-Dispensing Naloxone to Patients Prescribed Chronic Opioid Therapy

NCT03337100
View directory record Official record
Conditions
Overdose, Risk Behavior
Interventions
Co-Dispensing
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 4, 2026, 6:21 AM EDT
Recruiting Not applicable Interventional

Machine-Learning Prediction and Reducing Overdoses With EHR Nudges

NCT06806163
View directory record Official record
Conditions
Opioid Overdose, Opioid Use, Opioid Use Disorder, Opioids
Interventions
EHR-Embedded Elevated-Risk Flag, EHR-Embedded Elevated-Risk Flag with Behavioral Nudges, Usual Care
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
1,350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 4, 2026, 6:21 AM EDT