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Scientists smoke out cannabis effects in new study

NCT ID NCT06859723

Knowledge-focused Sponsor: University of California, Los Angeles Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 04, 2026 · Updated 1 time

Summary

This study looks at how smoking high-potency cannabis affects pain relief, feelings of being high, and drug levels in the blood. Researchers will test 30 near-daily cannabis users who are not seeking treatment. Participants will smoke either placebo, low-dose, or high-dose THC cannabis, both during normal use and after a short break from cannabis.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Cannabis (smoked)
What this could lead to
If successful, this could help understand how high-potency cannabis affects pain and abuse potential, informing safer use guidelines.
What could go wrong
This is a small, early-phase study with only 30 participants, so results may not apply broadly. It does not test a treatment or cure.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2025

Expected to finish

Jul 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 55 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * • Male or non-pregnant and non-lactating females aged 21-55 years * Report cannabis smoking near daily * 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 any substance use disorder other than cannabis, nicotine, caffeine * Do not have positive urine toxicology for cannabis use during screening * Evidence of severe psychiatric illness (e.g. mood or anxiety disorder with functional impairment or suicide risk, schizophrenia) judged by the study physician (and PI) to put the participant at greater risk of experiencing adverse events due to completion of study procedures, interfere with their ability to participate in the study, or their capacity to provide informed consent. * Report using other illicit drugs in the prior 4 weeks * Current predominant licit use of medical cannabis, prescription analgesics, or any medications that may affect study outcomes * Current pain * Pregnancy * Currently enrolled in another research protocol * Not using a contraceptive method (hormonal or barrier methods) * Insensitivity to the cold water stimulus of the Cold Pressor Test * Any disorders that might make cannabis administration hazardous as determined by evaluation physician after review of all medical assessments along with medical history. * Not able to speak and read English

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Conditions

The condition(s) this trial relates to.

cannabis dependence Pain

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Abuse cannabis Pain Pharmacokinetics

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • UCLA Center for Cannabis and Cannabinoids

    RECRUITING

    Los Angeles, California, 90095, United States

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