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Showing 1–24 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo Inhaled Cannabis Clear all
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Acute Effects of Cannabis on Cognition and Affect

NCT07296874
View directory record Official record
Conditions
Cannabis Use
Interventions
THC 20mg, Placebo
Drug
Lead sponsor
Washington State University
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Pullman, Washington
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Vaporized Cannabis for Chronic Pain Associated With Sickle Cell Disease

NCT01771731
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic and Pharmacodynamic Effects of Smoked and Vaporized Cannabis

NCT03676166
View directory record Official record
Conditions
Cannabis
Interventions
Cannabis
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 12, 2019 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Validation of the Drug Impaired Driving Scenario (DIDS) on the CRCDS-miniSim

NCT04970342
View directory record Official record
Conditions
Driving Behavior, Driving Under the Influence
Interventions
Placebo (Lactose) Capsule, 0.75 mg Alprazolam Capsule, Cannabis (6.18% THC / <0.025% CBD), Cannabis (0%/ THC / 0% CBD)
Drug
Lead sponsor
Timothy L. Brown
Other
Eligibility
19 Years to 45 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Delta-8-THC vs. Delta-9-THC on Simulated Driving Performance

NCT06218550
View directory record Official record
Conditions
Cannabis
Interventions
Delta-9-THC, Delta-8-THC, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Not yet recruiting Phase 1 Interventional

Cannabis and Opioid Use Disorder, Study 2

NCT07661446
View directory record Official record
Conditions
Opioid Use Disorders, Cannabis Use
Interventions
Inhaled Cannabis, Intranasal Opioid
Drug
Lead sponsor
University of Kentucky
Other
Eligibility
18 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effects of Various Cannabis Strains on Perceptual, Subjective and Objective Use Outcomes

NCT07214155
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis, 0 mg THC (placebo)
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 55 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Acute Effects of Cannabis on Everyday Life Memory

NCT05488509
View directory record Official record
Conditions
Cannabis Use
Interventions
Cannabis, Placebo
Drug
Lead sponsor
Washington State University
Other
Eligibility
21 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pullman, Washington
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Acute Effects of Cannabis on Cognition and Mobility in Older HIV-infected and HIV-Un-infected Women

NCT03633721
View directory record Official record
Conditions
HIV, AIDS, Aging
Interventions
Cannabis, Placebo
Drug · Other
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Sep 27, 2026, 6:14 PM EDT
Recruiting Phase 1 Interventional

THC Effects on Glucose in Type 2 Diabetes

NCT05322213
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
THC, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Cannabis Administration Routes on Human Performance and Pharmacokinetics

NCT02177513
View directory record Official record
Conditions
Cannabis Use
Interventions
Placebo + Placebo, Oral Cannabis + Placebo, Placebo + Inhaled Cannabis, Placebo + Smoked Cannabis, 6.9% cannabis oral
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 50 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 15, 2019 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 2 Interventional

Efficacy of Inhaled Cannabis for Acute Migraine Treatment

NCT04360044
View directory record Official record
Conditions
Migraine, Cannabis, THC, CBD
Interventions
THC ~5%, CBD ~12%, THC ~5% and CBD ~12%, Sham Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 27, 2026, 6:14 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study II

NCT02710097
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled cannabis, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study I

NCT02709954
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled delta-9-THC, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 1Phase 2 Interventional

Efficacy of Inhaled Cannabis in Diabetic Painful Peripheral Neuropathy

NCT00781001
View directory record Official record
Conditions
Painful Diabetic Neuropathy
Interventions
Cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 29, 2013 · Synced Sep 27, 2026, 6:14 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Cannabis and Opioid Use Disorder

NCT05729932
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Inhaled vaporized cannabis, Intransal opioid
Drug
Lead sponsor
Shanna Babalonis, PhD
Other
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 17, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Suspended Phase 2 Interventional

Dose-Ranging Trial of Inhaled Cannabis for Acute Migraine Treatment

NCT05427630
View directory record Official record
Conditions
Migraine, Cannabis, THC
Interventions
THC ~2.5%, THC ~5%, THC ~10%, Sham Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Inhaled Cannabis on Driving Performance

NCT01620177
View directory record Official record
Conditions
Alcohol Drinking, Cannabis
Interventions
Alcohol(oral) and placebo, Cannabis(THC)(Inhaled) and Placebo
Drug
Lead sponsor
Gary R Gaffney
Other
Eligibility
21 Years to 55 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 1, 2018 · Synced Sep 27, 2026, 6:14 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Brain Mechanisms Supporting Cannabis-induced Pain Relief

NCT04982965
View directory record Official record
Conditions
Sciatica, Lumbar Radiculopathy, Lower Back Pain, Degenerative Disc Disease, Chronic Low-back Pain (cLBP), Chronic Low Back and Leg Pain, Back Pain
Interventions
Active Cannabis, Placebo Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Sep 27, 2026, 6:14 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Cannabis for Spasticity in Multiple Sclerosis

NCT00682929
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Inhaled Cannabis, Oral THC, Oral Placebo, Inhaled placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 17, 2018 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cannabis Impairment Detection Application (CIDA)

NCT04230460
View directory record Official record
Conditions
Driving Under the Influence, Marijuana Intoxication, Alcohol Intoxication
Interventions
Cannabis (THC) (Inhaled) Placebo, Cannabis (High% THC) (Inhaled), Cannabis (Very High% THC) (Inhaled), Alcohol (oral)
Drug
Lead sponsor
Advanced Brain Monitoring, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 11, 2021 · Synced Sep 27, 2026, 6:14 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Vaporized Cannabis and Spinal Cord Injury Pain

NCT01555983
View directory record Official record
Conditions
Spinal Cord Injuries, Spinal Cord Diseases
Interventions
Vaporization of Cannabis
Drug
Lead sponsor
Barth Wilsey
Other
Eligibility
18 Years to 70 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Mather, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Sep 27, 2026, 6:14 PM EDT
Not listed Phase 2 Interventional

Safety and Efficacy of Inhaled Cannabis For the Uncontrolled Pain Relief in Patients With Advanced Cancer

NCT04042545
View directory record Official record
Conditions
Cancer Pain, Quality of Life, Pain, Acute, Cannabis Use
Interventions
PPP001, Placebo
Drug
Lead sponsor
Tetra Bio-Pharma
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cave Creek, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced Sep 27, 2026, 6:14 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Repeated CBD Administration and Cannabis Outcomes

NCT07434895
View directory record Official record
Conditions
Cannabis, Abuse Liability, Experimental Pain in Healthy Human Participants
Interventions
Cannabidiol, Medium Dose, Cannabidiol, Higher Dose, Active Inhaled Cannabis, Placebo Cannabidiol, Placebo Inhaled Cannabis
Drug
Lead sponsor
Hannah Harris
Other
Eligibility
18 Years to 55 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 27, 2026, 6:14 PM EDT