Clinical trials
Substance Use Disorders clinical trials
Below are recruiting substance use disorders clinical trials, each written for real people, not researchers. We’re tracking 418 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05674409Recruiting
Telehealth family program for moderate to severe alcohol use
This study tests a brief treatment delivered by video that involves a Veteran and a concerned family member or friend. It’s meant for Veterans with ongoing alcohol problems, to see if family involvement helps them change drinking and stay safe during treatment.
Charleston, South CarolinaAges 21 years+ - NCT07273955Recruiting
Alcohol use and weight-loss surgery: a study of addiction follow-up
This study looks at how alcohol use disorder changes after weight-loss surgery. Researchers want to understand the link between eating disorders, alcohol problems, and addiction treatment before and after surgery.
StrasbourgAges 18 years+ - NCT06789250Recruiting
Online therapy for mental health and alcohol use issues
This trial tests an internet-based cognitive behavioral therapy program designed for people who struggle with both mental health symptoms (like depression or anxiety) and problematic alcohol use. The goal is to see if this approach can help improve both issues at the same time, conveniently from home.
LinköpingAges 18 years+ - NCT03764098RecruitingPhase 2
Guanfacine to reduce heavy drinking in adults with alcohol use disorder
This Phase 2 study tests whether guanfacine can reduce drinking in women and men who drink heavily and meet criteria for alcohol use disorder. It also looks at how the medicine affects drinking patterns in a controlled setting.
New Haven, ConnecticutAges 21–70 - NCT04331704RecruitingPhase 4
Alcohol and sexual health program for men at risk of HIV
This study tests an alcohol- and sexual-health program to help reduce HIV risk in men who recently had condomless sex and drink heavily. It may help you by offering structured support around drinking and HIV prevention (PrEP).
Gainesville, FloridaAges 18–30 - NCT05989841RecruitingPhase 1/Phase 2
Helping women after sexual assault who use cannabis
This study tests a new approach to help women who have recently experienced a sexual assault and use cannabis. It explores whether reducing anxiety about physical symptoms can help prevent long-term PTSD and cannabis problems.
Minneapolis, MinnesotaAges 18 years+ - NCT06042361Enrolling by invitation
Making smoke-free housing fairer for residents
This study aims to make smoke-free policies more equitable in affordable housing communities. If you live in one of the six selected properties in Massachusetts, Maryland, or New York, you may be able to participate in a survey or a group discussion.
Boston, MassachusettsAges 18 years+ - NCT07052175Recruiting
Preventing relapse in behavioral disorders with a smartphone app
This study tests whether a smartphone app can help prevent relapse in people with behavioral disorders. If you speak Spanish, have a smartphone, and are willing to use the app, you may be able to join.
Ciempozuelos, MadridAges 18–90 - NCT07488819Recruiting
Brain imaging study for people with PTSD or alcohol use disorder
This study uses a special brain scan (PET) to look at a protein called PDE4B in people with PTSD or alcohol use disorder. It may help researchers understand these conditions better.
New Haven, ConnecticutAges 18–70 - NCT05957848RecruitingPhase 2
Guanfacine for teens with cannabis use problems
This Phase 2 study tests whether extended-release guanfacine can reduce cannabis use in adolescents and young adults. It may help by targeting brain pathways that can drive cravings or continued use.
Parkville, VictoriaAges 12–25 - NCT06395389Recruiting
A brief program to help young adults cut back on cannabis
This trial tests a short, one-time program designed to help people ages 18-25 who use cannabis frequently (at least 20 days per month) reduce their use. It may be a good fit if you're not already in treatment and are thinking about making a change.
Charleston, South CarolinaAges 18–25 - NCT06030154Recruiting
Boosting positive feelings for people with alcohol use disorder
This study tests a program designed to help people with alcohol use disorder who also struggle with low mood or anxiety. It aims to increase positive emotions, which may make it easier to reduce drinking.
Tulsa, OklahomaAges 18–65 - NCT06239350Recruiting
Young adult tobacco and cannabis co-use study
This study tests a program to help young adults who use both nicotine and cannabis products reduce or quit nicotine use. If you are between 18 and 25, use nicotine products at least 20 days a month and cannabis at least 10 days a month, and want to quit nicotine, you may be eligible.
Charleston, South CarolinaAges 18–25 - NCT06379984RecruitingPhase 2
Quick-start buprenorphine for opioid addiction with fentanyl use
This trial tests a way to quickly start buprenorphine (a medication for opioid addiction) in an outpatient clinic for people who use fentanyl. It aims to make starting treatment easier and faster, without needing to go through full withdrawal first.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06534047RecruitingPhase 4
Brain stimulation or nicotine patch to help you quit smoking
This study tests whether a brain stimulation treatment called rTMS can help people with psychiatric conditions quit smoking. You will be randomly assigned to get either rTMS or a nicotine patch, and your progress will be tracked to see which treatment works better.
Toronto, OntarioAges 18–70 - NCT06726200RecruitingEarly Phase 1
Comparing buprenorphine formulations for fentanyl addiction
This study tests two different forms of buprenorphine (a medication for opioid addiction) to see which works better for people who use fentanyl or other strong synthetic opioids. If you are seeking treatment for opioid use, this trial may help you find the most effective option.
New York, New YorkAges 18–65 - NCT06991205Recruiting
Web mind-body program for pain and substance use
This trial tests a web-based mind-body program to help people who have ongoing arm or hand pain and also use substances like alcohol or cannabis. It aims to improve resilience and reduce pain without requiring in-person visits.
Boston, MassachusettsAges 18 years+ - NCT05838274Recruiting
Study of alcohol effects and brain scans in bipolar disorder
This study gives a controlled amount of alcohol and uses brain MRI scans to understand how alcohol affects people with bipolar disorder. It may help researchers find brain and behavior patterns that explain differences in alcohol responses.
Austin, TexasAges 21–26 - NCT06916754Recruiting
Comparing two therapies for alcohol addiction
This study compares two types of therapy to help people reduce or stop drinking. You will attend weekly sessions for 12 weeks and learn new skills or use hypnotherapy to support your recovery.
IstanbulAges 18–65 - NCT06355778Recruiting
Brain and Opioid Use Study
This study uses brain scans to understand how adversity affects opioid use and recovery. It compares people with opioid use disorder on buprenorphine, people taking buprenorphine for chronic pain, and healthy volunteers.
Ann Arbor, MichiganAges 18–55 - 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 - NCT06118580RecruitingPhase 2
Alcohol and aggression brain study
This study looks at how alcohol affects the brain in people with a history of aggression or alcohol use disorder. You may be able to join if you're a right-handed adult who drinks regularly and fits one of the specific groups being studied.
Columbus, OhioAges 21–55 - NCT06207162Recruiting
Brain scans and methadone treatment for opioid recovery
This study uses MRI scans over time to track brain changes in people with opioid use disorder who recently started methadone treatment. You can help researchers understand recovery patterns if you are early in your methadone journey and can commit to repeated visits.
New Haven, ConnecticutAges 18–50 - NCT03745339Recruiting
Smell-based memory task in people with opioid-use disorder
This study tests how people learn and infer what something means using a smell-and-memory task. It compares people with opioid-use disorder who are abstinent, those in maintenance treatment, and healthy controls to see what affects learning and decision-making after opioid use.
Baltimore, MarylandAges 21–60
Hear when a new Substance Use Disorders trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for substance use disorders?
- Yes. Clin2 currently lists 418 recruiting substance use disorders 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 substance use disorders 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 substance use disorders 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.