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
- NCT05219175RecruitingPhase 2
MDMA therapy for PTSD and opioid addiction after childbirth
This Phase 2 study tests whether MDMA-assisted therapy can reduce symptoms of PTSD and help with opioid use disorder in people after childbirth. You must be on a stable, low enough dose of methadone or buprenorphine and be able to follow study rules, including therapy sessions and safety monitoring.
Albuquerque, New MexicoAges 18 years+ - NCT05943665RecruitingPhase 2
MDMA-assisted therapy for PTSD and alcohol use in veterans
This study tests whether MDMA, given in a controlled clinical setting, can reduce symptoms of PTSD and alcohol use disorder in veterans. It also combines the medication with structured therapy sessions to help you manage symptoms without relying on alcohol or other substances.
Providence, Rhode IslandAges 18 years+ - NCT06297200Recruiting
Ultrasound treatment for complex back pain patients
This study tests a new, non-invasive ultrasound treatment for people with long-term back pain who also have opioid use disorder and anxiety. It aims to see if this gentle brain stimulation can reduce pain and improve quality of life.
Roanoke, VirginiaAges 18–65 - NCT06718491Recruiting
A smartphone program to reduce heavy drinking for people on opioid treatment
This study tests a brief smartphone-based program to help people reduce heavy drinking while they are receiving medication for opioid use disorder (MOUD). It aims to improve both alcohol and mental health outcomes.
Columbus, OhioAges 18 years+ - NCT06636227RecruitingPhase 1
Diclofenac dose study for alcohol use disorder
This study tests whether different doses of diclofenac, an anti-inflammatory drug, can help people reduce heavy drinking. It looks at how the drug affects drinking patterns and overall health.
Catonsville, MarylandAges 21–65 - NCT06688539RecruitingPhase 4
Quitting e-cigarettes in adults who also use cannabis
This trial tests if varenicline, a stop-smoking medication, can help people ages 18 to 40 quit e-cigarettes while also using cannabis. It's designed for regular e-cigarette users who want to quit and who use cannabis at least 10 days per month.
Charleston, South CarolinaAges 18–40 - NCT06770556Recruiting
TMS and brain scans for alcohol use disorder
This study tests whether transcranial magnetic stimulation (TMS) affects brain activity in people with and without alcohol use disorder. You'll have TMS and a brain scan (MEG) to see how your brain responds.
Winston-Salem, North CarolinaAges 21–65 - NCT06387290RecruitingPhase 3
Mindfulness and pain management for chronic pain on opioids
This study tests whether adding mindfulness training to standard pain management visits can help people with chronic pain who are taking long-term opioids. It aims to improve pain relief and reduce opioid-related risks.
La Jolla, CaliforniaAges 18 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 - NCT05576350Recruiting
Coaching to reduce risky drinking and HIV risk
This study tests an intervention (coaching/skills training) to help reduce risky alcohol use and reduce behaviors that increase HIV risk. It may help you if you drink in an at-risk way and may benefit from HIV prevention like PrEP.
New Haven, ConnecticutAges 18–35 - NCT07466784Recruiting
Opioid use registry for emergency patients
This study is for people who come to the emergency department because of an opioid overdose, withdrawal, or related problem. It will collect information about patients' experiences to help improve care and support for opioid use.
Vancouver, British ColumbiaAges Any age - NCT06214065Recruiting
Brain stimulation for social thinking in autism
This trial tests whether mild brain stimulation (TMS) over the temporoparietal junction can improve a social thinking skill called 'mentalizing' in adults with autism. You would have MRI scans, cognitive tasks, and several TMS sessions.
Hartford, ConnecticutAges 18–35 - NCT05365347Recruiting
Program to reduce risky alcohol use in early psychosis
This study tests an intervention aimed at helping people with early psychosis who also drink in a risky way. It may help reduce problematic drinking during a critical early period of illness.
Halifax, Nova ScotiaAges 16–35 - 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 - NCT04871048Recruiting
tDCS training to reduce cannabis use in people with schizophrenia
This trial tests whether a non-painful brain stimulation method (tDCS) can help people with schizophrenia who also have moderate-to-severe cannabis use disorder reduce or quit cannabis. It also involves MRI scanning to help study brain changes.
BronAges 18–60 - NCT07091292Recruiting
Exercise as a treatment for cannabis use
This study tests whether regular exercise can help young adults reduce or stop their cannabis use. It may be a good fit if you are 18-40, use cannabis as your main drug, and want to try an exercise-based approach.
Hong KongAges 18–40 - NCT06532370Recruiting
Reward program for methamphetamine use after trauma in Hawaii
This study tests a program that uses rewards (like gift cards) to encourage people who use methamphetamine and have been hospitalized for a trauma to stop using. The program is designed for people in Hawaii and aims to help them reduce or quit methamphetamine use.
Honolulu, HawaiiAges 18 years+ - NCT05684094Recruiting
Study links sleep, stress, and brain reward in risky drinking
This study looks at how sleep timing and stress affect brain responses related to reward and stress in young adults who drink heavily. It may help researchers understand why some people take bigger alcohol risks and how sleep and stress could be part of safer treatment.
Eugene, OregonAges 18–24 - NCT05866107Recruiting
App and smart scale program for weight loss in bipolar or schizophrenia
This study tests whether using a health app and smart body-fat scales helps people who are overweight or obese lose weight. It is designed for adults with bipolar disorder or schizophrenia who are stable and can safely follow the weight-loss and activity plan.
Beijing, Beijing MunicipalityAges 18–60 - NCT06349083RecruitingPhase 2
Psilocybin-assisted treatment for alcohol use disorder
This study tests whether psilocybin, a psychedelic drug, combined with therapy can help people reduce or stop drinking. It aims to understand how psilocybin affects the brain and behavior in people with alcohol use disorder.
New York, New YorkAges 18–65 - NCT07457489Recruiting
Brain stimulation for opioid recovery
This study tests a non-invasive brain stimulation technique called TMS to see if it can reduce opioid cravings and help people who are already taking buprenorphine stay in recovery. TMS uses magnetic pulses to stimulate parts of the brain involved in addiction.
Brentwood, TennesseeAges 18–65 - 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 - 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 - NCT04793685RecruitingPhase 2
Prazosin for alcohol withdrawal symptoms in alcohol use disorder
This study tests whether prazosin can reduce symptoms that happen when someone stops or cuts back on heavy drinking. It may help people with moderate-to-severe alcohol use disorder who also have alcohol withdrawal symptoms.
New Haven, ConnecticutAges 18–70
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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.