Clinical trials
Cannabis clinical trials
Below are recruiting cannabis clinical trials, each written for real people, not researchers. We’re tracking 157 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06518434RecruitingPhase 2
Cannabis oil for advanced liver cancer study
This study tests if cannabis oil can help people with advanced liver cancer that cannot be treated with standard therapies. It is a small pilot study to see if the oil is safe and may improve symptoms or quality of life.
GroningenAges 18 years+ - NCT06743373Recruiting
Cannabis and sleep in young adults
This study looks at how cannabis affects sleep, daily rhythms, and sensitivity to light in young adults. You would either stop using cannabis for 4 weeks (if you are a regular user) or serve as a non-user control, to compare sleep patterns.
Pittsburgh, PennsylvaniaAges 18–25 - NCT06863740Recruiting
Cannabis for Restless Legs Syndrome
This study tests whether cannabis can help people with Restless Legs Syndrome that has not improved with standard treatments. If you have RLS and other treatments haven't worked well, you may be able to join.
Toronto, OntarioAges 25 years+ - NCT06878859Recruiting
Online program for depression and cannabis use
This study tests a digital (online) program designed to help people who struggle with both depression and cannabis use. If you're feeling down and also using cannabis more than you'd like, this program might help you manage both.
Boston, MassachusettsAges 18 years+ - NCT06883162RecruitingPhase 3
A study to help people stop smoking tobacco and reduce cannabis use
This study tests whether a medication called varenicline (or a placebo) can help people who use both tobacco and cannabis to quit or cut back. It takes place in South Carolina and lasts 12 weeks.
Charleston, South CarolinaAges 18 years+ - NCT06946940RecruitingPhase 2
Cannabis oil for fibromyalgia pain
This trial tests whether cannabis oil can help people with fibromyalgia who still have pain despite trying other treatments. Participants will receive cannabis oil, and researchers will look for biological markers that predict who responds best.
HaifaAges 30 years+ - NCT06975020Recruiting
Comparing biomarkers in regular cannabis users vs. non-users
This study compares biological markers between people who use cannabis regularly and those who do not, to understand how cannabis affects the body.
BaselAges 18–65 - NCT07216690RecruitingPhase 2
Pregnenolone for cannabis intoxication treatment
This trial tests whether a natural steroid called pregnenolone can help treat symptoms of cannabis intoxication. If you qualify, you would receive either pregnenolone or a placebo after using cannabis to see how you feel.
Baltimore, MarylandAges 18–65 - NCT07679581Recruiting
Cannabis, brain waves, and attention study
This study looks at how cannabis use affects brain activity and attention. It compares heavy users and non-users to understand the effects on memory and focus.
Boulder, ColoradoAges 21–40 - NCT07417059Recruiting
How sex hormones affect cannabis response
This study looks at how natural hormones in women affect the way they respond to cannabis. It may help explain why some people feel stronger or different effects from cannabis.
MaastrichtAges 18–40 - NCT05486234Recruiting
Study to reduce cannabis and alcohol use with teen and caregiver
This study looks at ways to help teens cut down on cannabis and alcohol use. You may qualify if you’ve been using both in the last three months and your caregiver is able to join and consent.
Charleston, South CarolinaAges 13–17 - NCT06137365RecruitingPhase 2
Cannabis for Obesity Treatment Study
This study tests whether a cannabis product can help with weight loss in people with obesity. It is for those who have not used cannabis recently and are generally healthy.
Lexington, KentuckyAges 18–65 - NCT06381180RecruitingPhase 1/Phase 2
Cannabis for Veterans with PTSD
This study is testing whether cannabis can help veterans with PTSD feel better. It is for veterans who have used cannabis before and currently have PTSD symptoms.
Detroit, MichiganAges 19–69 - NCT06085222Recruiting
App and computer study for stress in daily cannabis users
This study tests if a smartphone app and computer program can help regular cannabis users manage stress. It is for people who use cannabis daily or nearly daily and feel stressed.
Tallahassee, FloridaAges 18–30 - NCT06107062RecruitingPhase 2
CBD treatment for cannabis concentrate users
This trial tests CBD as a potential treatment for heavy cannabis concentrate users who want to cut down or quit. You would take CBD daily and attend regular visits to track your progress.
Boulder, ColoradoAges 21 years+ - NCT05453513Recruiting
Study how depression and cannabis affect the brain in young adults with HIV
This study looks at brain activity to understand how depression and cannabis use may be linked in young adults living with HIV. It mainly involves questionnaires, mental health screening, and brain scans, which may help researchers better understand risk factors and brain “underpinnings.”
Miami, FloridaAges 18–59 - NCT06569394RecruitingPhase 2
Testing CBD in young adults who use cannabis heavily
This study tests whether cannabidiol (CBD) can help young adults who use cannabis heavily but aren't looking to quit. You'll take a CBD pill and see if it changes your cannabis use or related symptoms.
Aurora, ColoradoAges 18–25 - NCT07063589Recruiting
Cannabis use patterns in young adults
This study looks at how young adults (ages 18–24) use cannabis and how it relates to their health and social life. If you join, you'll answer questions through your mobile phone over time, which helps researchers understand patterns and effects.
Montreal, QuebecAges 18–24 - NCT06379971RecruitingPhase 1
Choline for cannabis use in pregnancy
This trial tests whether taking choline (a vitamin-like nutrient) during pregnancy can help protect the baby's brain development in women who use cannabis. It aims to understand if choline supplementation can reduce potential risks linked to cannabis use.
Aurora, ColoradoAges 18–45 - NCT06017622Recruiting
THC Levels in Young People with Cannabis Overdose in the ER
This study looks at the amount of THC (the active ingredient in cannabis) in the blood of children and teens who come to the emergency room with severe drowsiness or confusion after using cannabis. It will help doctors better understand how cannabis affects young people.
Worcester, MassachusettsAges Any age - NCT05836207Recruiting
Rewards for quitting cannabis in young adults
This study tests whether offering rewards can help young adults stop using cannabis. You would attend a treatment clinic and provide supervised urine tests twice each week while aiming to quit.
AmsterdamAges 16–22 - NCT02480283Recruiting
Study of cannabis smoke and lung immune response
This study compares people who smoke cannabis daily with people who have never used cannabis. It looks at how cannabis smoke affects lung stress and the lungs’ immune defenses, using health tests and urine screening to keep participants safe.
Aurora, ColoradoAges 18–55 - NCT07513337Enrolling by invitation
How Cannabis Labels and Marketing Affect Users
This study investigates how different labels and marketing descriptions of cannabis products influence what people expect and experience. Researchers will compare your reactions to various cannabis products to understand how information shapes use patterns.
Baltimore, MarylandAges 21 years+ - NCT06661031Enrolling by invitation
Cannabis use help for young adults via phone app
This study tests a new program that combines telehealth coaching and a smartphone app to help young adults who use cannabis a lot to cut back or quit. If you are a patient at certain Boston clinics and use cannabis on most days, this study might be a good fit for you.
Boston, MassachusettsAges 18–26
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Common questions
- Are there clinical trials for cannabis?
- Yes. Clin2 currently lists 157 recruiting cannabis studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a cannabis trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a cannabis trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.