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ClinicalTrials.gov public records Last synced Sep 3, 2026, 11:04 AM EDT

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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Assessing the Pharmacokinetics and Drug Interaction Liability of Kratom, an Opioid-like Natural Product

NCT04392011
Conditions
Interaction Drug Food
Interventions
Midazolam HCl, Dextromethorphan HBr, Kratom
Drug · Dietary Supplement
Lead sponsor
Washington State University
Other
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Spokane, Washington
Conditions
Herbal Interaction
Interventions
Kratom, Oxycodone
Dietary Supplement · Drug
Lead sponsor
Washington State University
Other
Eligibility
21 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Spokane, Washington
Completed No phase listed Observational Accepts healthy volunteers

Cannabis Use and Epigenetic Alterations in Human Male Sperm Cells

NCT03614637
Conditions
Cannabis Use
Interventions
Cannabis use abstinence for 11 weeks
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Concussion, Brain
Interventions
Screen time permitted, Screen Time Abstain
Behavioral
Lead sponsor
Theodore Macnow
Other
Eligibility
12 Years to 25 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Worcester, Massachusetts