Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 21 to 55

Oral THC and CBD in Men and Women

Official title: Evaluation of Oral THC and CBD in Oral Fluid, Pharmacokinetics, and Subjective and Neurocognitive Effects in Men and Women

Run by University of California, Los Angeles · NCT05067387 · Data updated 2026-11-12

This study tests how oral THC and CBD behave in the body and whether recently smoked THC can be detected in saliva, in adults who use cannabis but aren’t seeking treatment.

Quick facts

PhasePhase 1
Study typeInterventional
Ages21 Years to 55 Years
SexAll
Enrollment22 (estimated)
SponsorUniversity of California, Los Angeles
Academic / other
Locations1 site (Los Angeles, California)
StatusRecruiting
StartedAugust 13, 2026
Main results expectedJune 15, 2027
Study endsJune 15, 2028
Registry record updatedSeptember 8, 2026
Trial IDNCT05067387 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 21-55 who use cannabis regularly but are not seeking treatment and meet the study’s health criteria.

Probably not a fit

Individuals with cannabis use disorder or other significant medical/psychiatric conditions, or those on interfering medications, may not benefit and could be excluded.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 1, double-blind, placebo-controlled, within-subject study will measure the pharmacokinetics and pharmacodynamics of orally administered THC and CBD. It will also evaluate detection of recently smoked THC using oral-fluid biosensors and assess neurocognitive performance markers related to recent cannabis use. The study will determine how THC, CBD, and their metabolites appear in whole blood and how they affect pharmacodynamic outcomes. Participants will receive placebo, THC, CBD, or both, in a crossover design across study visits.

Why it matters

Potential benefit: Participants may gain access to early information about how THC and CBD behave in the body and how detection methods perform, which could inform safer use and testing.

How similar studies have gone: Previous research in cannabinoids has established pharmacokinetic and pharmacodynamic profiles, though this exact combination and within-subject, oral-delivery design is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male or non-pregnant and non-lactating females aged 21-55 years
* Report weekly-monthly use of cannabis (≤1 day per week) over the past month prior to screening,
* Not currently seeking treatment for their cannabis use
* Have a Body Mass Index from 18.5 - 34kg/m2.
* Able to perform all study procedures
* Must be using a contraceptive (hormonal or barrier methods)

Exclusion Criteria:

* Meeting DSM-V criteria for moderate to severe Cannabis Use disorder (CUD) or any substance use disorder other than nicotine, caffeine
* Any other Axis I disorder
* Report using other illicit drugs in the prior 4 weeks, other than cannabis.
* Current use of any medications that may affect study outcomes
* If medical history, physical and psychiatric examination, or laboratory tests performed during the screening process are not within the normal range and / or reveal any significant illness (e.g., hypertension) as judged by the study physician and to put the participant at greater risk of experiencing adverse events due to completion of study procedures.
* Pregnancy is exclusionary due to the possible effects of the study medication on fetal development.
* History of an allergic reaction or adverse reaction to cannabis is exclusionary.
* History of respiratory illness or current respiratory illness
* Currently enrolled in another research protocol
* Not using a contraceptive method (hormonal or barrier methods)
* The evaluating physician reviews all medical assessments along with medical history. Any disorders that might make cannabis administration hazardous are exclusionary.

Where it's running

  • University of California, Los Angeles
    Los Angeles, California, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.