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Showing 1–24 of 49 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Suvorexant Placebo Clear all
Completed Phase 4 Interventional Results available

Efficacy of Suvorexant to Treat Insomnia Related to Bipolar Disorder

NCT02527564
View directory record Official record
Conditions
Insomnia, Bipolar Disorder
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2022 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Measuring Acute Drug Demand in Humans

NCT05829655
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Dependence
Interventions
Drug A (Blinded Drug), Drug B (Blinded Drug), Drug C (Blinded Drug), Drug D (Blinded Drug), Suvorexant (20mg/day), Placebo
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

Suvorexant on Sleep Disturbance in Patients With Chronic Insomnia and Suboptimally Controlled Type 2 Diabetes

NCT03818581
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Insomnia, Sleep Disorder, Inflammation
Interventions
Suvorexant, Placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
25 Years to 75 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 2 Interventional Results available

Medication Development in Alcoholism: Suvorexant Versus Placebo

NCT04229095
View directory record Official record
Conditions
Alcohol Use Disorder (AUD)
Interventions
Suvorexant 20 mg, Placebo oral tablet
Drug
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced Sep 15, 2026, 8:41 AM EDT
Terminated Phase 4 Interventional Results available

Suvorexant in Insomnia Co-morbid With Fibromyalgia

NCT02684136
View directory record Official record
Conditions
Insomnia, Fibromyalgia
Interventions
suvorexant, placebo
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Sep 15, 2026, 8:41 AM EDT
Not listed Phase 4 Interventional

Impact of Suvorexant on Sympathetic Nerve Activity and Baroreflex Function in Chronic Insomnia

NCT03768713
View directory record Official record
Conditions
Chronic Insomnia
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Montana State University
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

The Role of Orexin in Human Panic Disorder

NCT02593682
View directory record Official record
Conditions
Panic Disorder
Interventions
suvorexant, placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Phase 3 Interventional

A Study of Suvorexant (MK-4305) for the Treatment of Insomnia Disorder in Participants With Opioid Use Disorder (MK-4305-098)

NCT06655883
View directory record Official record
Conditions
Insomnia
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 70 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
13
States / cities
Garden Grove, California • New Haven, Connecticut • Bradenton, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

A Study of Suvorexant in Patients With Multiple Sclerosis Fatigue and Insomnia

NCT03110315
View directory record Official record
Conditions
Multiple Sclerosis, Fatigue, Insomnia
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Theodore R. Brown, MD MPH
Other
Eligibility
18 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Kirkland, Washington
Source: ClinicalTrials.gov public record
Updated Feb 2, 2025 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

Efficacy of Suvorexant on Post-operative Sleep Disturbance

NCT05823844
View directory record Official record
Conditions
Postoperative Insomnia, Postoperative Delirium
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
50 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Examination of the Effectiveness of Suvorexant in Improving Daytime Sleep in Shift Workers

NCT02491788
View directory record Official record
Conditions
Sleep Disorder, Shift-Work
Interventions
Suvorexant, Placebo
Drug
Lead sponsor
VA Palo Alto Health Care System
Federal
Eligibility
20 Years to 60 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2020 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 2 Interventional

Examining the Role of the Orexin System in Sleep and Stress in Persons With Opioid Use Disorder

NCT04287062
View directory record Official record
Conditions
Sleep Disturbance, Opioid-use Disorder
Interventions
Suvorexant, Placebos
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 65 Years
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
5
States / cities
Baltimore, Maryland • Bel Air, Maryland • Elkton, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Suvorexant and Cocaine

NCT03937986
View directory record Official record
Conditions
Cocaine Use Disorder
Interventions
Suvorexant, Cocaine, Placebo oral capsule
Drug
Lead sponsor
William Stoops
Other
Eligibility
18 Years to 55 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Phase 2 Interventional

Suvorexant for Treatment of AUD and PTSD

NCT06679062
View directory record Official record
Conditions
Alcohol Use Disorder (AUD), Post Traumatic Stress Disorder (PTSD), Insomnia
Interventions
Suvorexant, Placebo
Drug · Other
Lead sponsor
Pharmacotherapies for Alcohol and Substance Use Disorders Alliance
Other
Eligibility
21 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Los Angeles, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Abuse Potential of ACT-541468 in Healthy Recreational Drug Users

NCT03657355
View directory record Official record
Conditions
Healthy Recreational Drug Users
Interventions
ACT-541468, Suvorexant, Zolpidem, Placebo
Drug
Lead sponsor
Idorsia Pharmaceuticals Ltd.
Industry
Eligibility
18 Years to 55 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 18, 2019 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

Efficacy of Suvorexant in the Treatment of Hot Flash-associated Insomnia

NCT03034018
View directory record Official record
Conditions
Insomnia
Interventions
suvorexant, placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
40 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 13, 2022 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Sleep Trial to Prevent Alzheimer's Disease

NCT04629547
View directory record Official record
Conditions
Sleep, Alzheimer Disease
Interventions
Suvorexant 20 mg, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
65 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Orexin s Role in the Neurobiology of Substance Use Disorder

NCT05630781
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Belsomra, Placebo, Methylphenidate
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 60 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 10, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

Efficacy of Suvorexant in Patients With Effectively Treated Restless Legs Syndrome and Persistent Chronic Insomnia

NCT04706091
View directory record Official record
Conditions
Restless Legs Syndrome, Insomnia, Sleep Disorder
Interventions
Suvorexant, Placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
25 Years to 85 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 15, 2024 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 2 Interventional Results available

Insomnia Treatment and EMA (Ecological Momentary Assessment) Outcomes

NCT05908526
View directory record Official record
Conditions
Insomnia
Interventions
Baseline surveys, Cognitive testing and EMAs, Actiwatch, suvorexant (or placebo), Placebo
Behavioral · Device · Drug + 1 more
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Sep 15, 2026, 8:41 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Suvorexant for Alcohol Use Disorder (AUD): Neural Mechanisms

NCT06484075
View directory record Official record
Conditions
Healthy Volunteers, Alcohol Use Disorder (AUD)
Interventions
Placebo, Suvorexant
Drug
Lead sponsor
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
Eligibility
18 Years to 75 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Determine the Abuse Potential of Seltorexant Compared to Suvorexant and Zolpidem

NCT05106153
View directory record Official record
Conditions
Healthy Non-dependent, Recreational Sedative Users, Abuse Potential
Interventions
Suvorexant, Zolpidem, Seltorexant, Placebo
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 60 Years
Enrollment
127 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 4 Interventional Results available

Suvorexant and Sleep/Delirium in ICU Patients

NCT04092894
View directory record Official record
Conditions
Insomnia, Sleep Fragmentation, Sleep Initiation and Maintenance Disorders, Postoperative Delirium
Interventions
Suvorexant 20 mg, Placebo oral tablet
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
60 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced Sep 15, 2026, 8:41 AM EDT
Completed Phase 2 Interventional Results available

Suvorexant to Reduce Symptoms of Nicotine Use

NCT04234997
View directory record Official record
Conditions
Smoking Cessation
Interventions
Suvorexant 20 mg, Suvorexant 0mg
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Sep 15, 2026, 8:41 AM EDT