Clinical trials
Cannabis clinical trials
Below are recruiting cannabis clinical trials, each written for real people, not researchers. We’re tracking 158 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05859347Recruiting
Brain stimulation study for cannabis use disorder
This trial tests whether a treatment called repetitive transcranial magnetic stimulation (a non-surgical magnetic stimulation to the brain) can help people reduce or stop cannabis use. You may be eligible if you have cannabis use disorder and meet specific safety and symptom criteria.
Toronto, OntarioAges 18–65 - NCT05863910Recruiting
Real-world study of medical cannabis use in children
This study looks at how medical cannabis is used for children and teens in everyday life, by collecting information through online questionnaires. It may help doctors and families better understand which uses are common and how people experience them.
Winnipeg, ManitobaAges 3–17 - NCT05885542RecruitingPhase 1/Phase 2
Testing CBD pills for cannabis use and stress in young adults
This early-phase study tests whether a CBD pill (compared with a placebo sugar pill) can affect cannabis use and stress in people ages 18–25 who use cannabis very frequently. It may help your stress levels and cannabis-related symptoms while researchers carefully monitor safety and abstinence periods during visits.
Charleston, South CarolinaAges 18–25 - NCT06030674Recruiting
Measuring Tobacco and Cannabis Smoke Exposure in Nonsmokers
This study measures how much tobacco and cannabis smoke nonsmokers are exposed to in their daily lives. It may help understand health risks from secondhand smoke.
San Francisco, CaliforniaAges 21–50 - NCT06206252Recruiting
Can Medical Cannabis Help Reduce Opioid Use?
This study tests whether medical cannabis can help people who take opioids for long-term pain reduce their opioid use. Participants will either use medical cannabis or continue without it for 3 months.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06314204Recruiting
Cannabis use and mental health recovery in psychosis patients
This study looks at how cannabis use affects hospital stays and short-term recovery for people hospitalized with psychotic symptoms. It aims to understand if cannabis helps or harms their progress.
Neuilly-sur-MarneAges 18 years+ - NCT06609083RecruitingPhase 1
How cannabis affects cigarette smoking
This study looks at how cannabis affects cigarette smoking habits. If you smoke every day and also use cannabis weekly, researchers want to see if cannabis changes how much you smoke.
Baltimore, MarylandAges 21 years+ - NCT06609109RecruitingPhase 1
Testing how cannabis affects e-cigarette use
This study is for daily e-cigarette users who also use cannabis at least once a week. It tests how cannabis affects vaping behavior. Researchers want to see if using cannabis changes how much or how people vape.
Baltimore, MarylandAges 21 years+ - NCT06660381RecruitingPhase 1
Psilocybin therapy for cannabis use disorder
This study tests if psilocybin (a substance that can change how you think and feel) can help people reduce or stop using cannabis. You will receive support and be monitored closely throughout the trial.
Baltimore, MarylandAges 18 years+ - NCT07489443Recruiting
Helping pregnant women reduce tobacco and cannabis use
This study is testing a program to help pregnant women and new mothers cut back on or quit using tobacco and cannabis. It’s designed to see if the program is easy to use and helps improve health for both mom and baby.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT06733792Recruiting
Mobile app to reduce or quit cannabis use
This study tests a mobile app designed to help people reduce or quit cannabis use. If you are a young adult (18-30) and have used cannabis recently, this app may help you cut back or stop.
Oviedo, Principality of AsturiasAges 18–30 - NCT06807762RecruitingPhase 1
Cannabis extract safety study for healthy adults
This study tests the safety and how the body processes a cannabis extract in healthy volunteers. It helps researchers understand if the extract is safe and how it works before moving to larger studies.
Vinhedo, São PauloAges 18–65 - NCT06859723RecruitingPhase 1
Effects of high potency cannabis on daily users
This study tests how high potency cannabis affects mood, thinking, and pain sensitivity in people who smoke cannabis almost every day. It will help researchers understand both immediate and long-lasting effects.
Los Angeles, CaliforniaAges 21–55 - NCT06907979Recruiting
Cannabis use and emotion processing study
This study looks at how heavy cannabis use affects the way you process emotions. You may be able to join if you use cannabis most days, meet criteria for cannabis use disorder, and are not currently in treatment for it. Participants will have brain scans and mild brain stimulation.
Auburn, AlabamaAges 18–50 - NCT06941298Recruiting
Cannabis and depression study for teens and young adults
This study looks at how cannabis affects the brain and mood in teens and young adults. It compares people who use cannabis, people with depression who don't use cannabis, and healthy volunteers to understand links between cannabis use and mental health.
Miami, FloridaAges 14–20 - NCT06967051Recruiting
Smartphone test of pupil response after cannabis use
This study uses a smartphone app to measure how your pupils react to light after using cannabis. It aims to see if the app can detect recent cannabis use, which could help develop a quick, non-invasive test.
London, OntarioAges 21 years+ - NCT07001878RecruitingPhase 4
Cannabis Strength and Brain Health in Early Psychosis
This trial studies how different strengths of cannabis affect the brain's white matter in people with early psychosis. It may help doctors understand which cannabis potencies are less harmful for young adults with psychosis.
St. John's, Newfoundland and LabradorAges 18–25 - NCT07160153Recruiting
Cannabis Abstinence and Brain Function in Teens
This trial looks at how cannabis affects brain function in teens aged 15–18 who have cannabis use problems. You'll have two neuropsychological tests (like thinking and memory tasks) to see if staying off cannabis helps your brain work better.
Pilsen, CzechiaAges 15–18 - NCT07184983Recruiting
Brain stimulation for cannabis use disorder
This study tests whether a gentle brain stimulation technique (called tDCS) can help people who want to cut down or stop using cannabis. You'll wear a headband-like device during sessions at NYU, and the study team will check in with you over time.
New York, New YorkAges 22–65 - NCT07196462Recruiting
Brain stimulation to reduce cannabis craving in schizophrenia
This study tests if a non-invasive brain stimulation technique can help reduce cravings for cannabis in people with schizophrenia. It aims to see if this approach can improve outcomes for those who use cannabis and have a psychotic disorder.
Nashville, TennesseeAges 18–65 - NCT07227324Recruiting
Cannabis use registry for cancer patients
This study is a registry that collects information from people with cancer who use cannabis. It aims to better understand how cannabis affects cancer symptoms and improve care.
Saint Louis Park, MinnesotaAges 18 years+ - NCT07379736Recruiting
Online support for heavy cannabis users
This trial tests a brief online advice program to help people who use cannabis heavily reduce their use. You take part from home and get personalized tips and support.
London, Greater LondonAges 18 years+ - NCT07423195Recruiting
Cannabis use during wisdom tooth removal study
This study looks at how cannabis use affects pain and recovery after wisdom tooth surgery. If you are 16 or older and need a lower wisdom tooth removed, you may be able to join.
Ann Arbor, MichiganAges 16–99 - NCT07496489Enrolling by invitation
Study on cannabis edible package warnings
This study looks at how people view warning labels on cannabis edibles packaging. Your thoughts could help improve health messages.
Winston-Salem, North CarolinaAges 18–65
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Common questions
- Are there clinical trials for cannabis?
- Yes. Clin2 currently lists 158 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.