Clinical trials
Drug Use Disorders clinical trials
Below are recruiting drug use disorders clinical trials, each written for real people, not researchers. We’re tracking 287 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06430580RecruitingEarly Phase 1
Cannabinoids and stress response in heavy cannabis users
This early-phase study tests how cannabinoids affect your body's reaction to stress. If you use cannabis daily and have cannabis use disorder, you may be able to join to help researchers understand these effects better.
Tallahassee, FloridaAges 18–50 - NCT07602270Recruiting
How a Ketogenic Diet Affects Alcohol in Your Body
This study tests whether eating a ketogenic diet (very low carb, high fat) changes how your body processes alcohol. Researchers will have you follow a special diet and then measure your body's response to controlled amounts of alcohol in a lab setting.
Philadelphia, PennsylvaniaAges 21–50 - NCT07740395Recruiting
Support app for people in recovery and their loved ones
This study tests a support app (KulaMind-Recovery) that helps people in recovery stay connected with a loved one. You and someone important to you would both use the app to see if it helps your recovery journey.
Providence, Rhode IslandAges 18 years+ - NCT07064564RecruitingPhase 1
Study comparing naltrexone implants with monthly injection in healthy volunteers
This trial compares two forms of naltrexone (a medication used for alcohol and opioid dependence) in healthy volunteers. It tests how well the body processes and tolerates a low or high-dose implant versus the standard monthly injection.
Millcreek, UtahAges 18–65 - NCT03948893Recruiting
Behavior program to help you quit nicotine
This study tests a structured counseling/behavior treatment to help people who smoke become nicotine-free. If you’re interested in quitting, you may be asked to complete questionnaires and follow a quit plan as part of the research.
Columbia, MissouriAges 18 years+ - NCT07649278Recruiting
ENHANCE Project Toolkit for people who use drugs
This study tests a toolkit designed to help people who use drugs access harm reduction services (like overdose prevention supplies and support). Researchers want to hear from people with recent drug use and from peer mentors about what would make these services easier to use.
Madison, WisconsinAges 18 years+ - NCT05548452RecruitingPhase 1/Phase 2
Microbiota transplant for advanced liver disease from alcohol
This trial tests whether giving a healthy mix of gut bacteria (an intestinal microbiota transplant) can improve outcomes in people with advanced liver disease caused by ongoing alcohol use. It may help rebalance the gut and support liver health, but participation depends on strict safety and diagnosis criteria.
Richmond, VirginiaAges 18 years+ - NCT04084860RecruitingPhase 2
Brief medicine trial to help reduce heavy alcohol drinking
This Phase 2 study tests a brief medication approach meant to reduce “problem drinking.” It may help people cut back or stop alcohol use by adjusting brain signaling related to drinking cravings and urges.
New York, New YorkAges 21–70 - NCT04458545RecruitingPhase 1/Phase 2
Opioid vaccine study for adults with heroin or fentanyl use
This trial tests a vaccine made from parts designed to help the body respond to opioids (heroin or fentanyl). It is mainly for adults with moderate-to-severe opioid use disorder who are using opioids that match the study dosing needs and who are willing to do frequent visits over about a year.
Eatontown, New JerseyAges 18–59 - NCT05028062RecruitingPhase 4
Naltrexone injections for people who want to cut alcohol drinking
This Phase 4 study tests whether naltrexone injections can help people with alcohol use disorder (AUD) reduce or stop heavy drinking. You may get two injections over 8 weeks, and you can join if you meet specific drinking pattern and eligibility rules.
Philadelphia, PennsylvaniaAges 18–65 - NCT05142267Recruiting
Study stress and opioid-risk factors in chronic low back pain
This study looks at how stress and the body’s natural opioid/cannabinoid systems may relate to risk of opioid misuse. It tests people with long-lasting low back pain to see what biological or psychological factors might increase or lower that risk.
Nashville, TennesseeAges 18 years+ - NCT05178069RecruitingPhase 2
Probiotic supplement study for alcohol use disorder and liver injury
This Phase 2 trial studies whether a probiotic (LGG) can improve health in people with alcohol use disorder and alcohol-related liver injury. It’s not an alcohol treatment study, so participants are mainly joining to see how the supplement affects the body and liver-related outcomes.
Louisville, KentuckyAges 21–65 - NCT05726045Recruiting
Sleep-based brain training to help you quit smoking
This study tests a way to improve smoking cessation using special sleep-based brain stimulation and memory support. If it works, it may help you stay committed to quitting by strengthening helpful brain learning during sleep.
Mannheim, Baden-WurttembergAges 18–65 - NCT05776316Recruiting
Harm-reduction support for adults using opioids
This trial offers harm-reduction services for adults who have been misusing opioids (and sometimes other substances) recently. It’s designed to test support approaches that may reduce risks and improve well-being.
New Haven, ConnecticutAges 18 years+ - NCT05778734Recruiting
Study to help young adults improve alcohol steadiness
This study is looking at ways to increase “alcohol abstinence,” meaning drinking less or stopping. It focuses on young adults who currently drink and have symptoms of alcohol use disorder, and it may help them build skills to reduce or stop drinking.
Chicago, IllinoisAges 18–24 - NCT05929677RecruitingEarly Phase 1
Study tests effects on impulsivity and how alcohol feels
This early-phase study looks at how alcohol affects impulsivity (tendency to act quickly) and people’s subjective experiences. You may be able to join if you drink regularly and meet the study safety rules.
Boston, MassachusettsAges 21–25 - NCT06136195RecruitingPhase 1
Mavoglurant for alcohol craving in heavy drinkers
This trial tests whether a medication called mavoglurant can reduce alcohol cravings and drinking in people who are heavy drinkers with alcohol use disorder and are not looking for treatment.
New Haven, ConnecticutAges 21–50 - NCT06189690Recruiting
Brain stimulation study for cocaine addiction
This trial tests whether a non-invasive brain stimulation technique called high-frequency repetitive transcranial magnetic stimulation (HF rTMS) can help reduce cocaine cravings and change brain chemistry. It may be a good option if you have cocaine use disorder and want to explore a new treatment that doesn't involve medication.
Mexico City, TlalpanAges 18–50 - NCT06302413Recruiting
Thinking about the future during early recovery
This study looks at how thinking about the future might help people in early recovery from substance use. It recruits people who have been abstinent for 2 weeks to 1 year and are in outpatient treatment.
Indianapolis, IndianaAges 18–60 - NCT06306443RecruitingPhase 3
Buprenorphine treatment for people leaving jail
This trial offers buprenorphine (a medication for opioid use disorder) to people in jail who are soon to be released. It helps you start treatment while incarcerated and continue it after you return to the community, aiming to reduce overdose and improve recovery.
Baltimore, MarylandAges 18 years+ - NCT06319872RecruitingPhase 1
Study of disulfiram for vision in retinal degeneration
This trial tests whether disulfiram, a drug used for alcohol use disorder, can improve vision in people with retinal degeneration. You must have an alcohol use diagnosis and agree to avoid alcohol for 6 months.
Rochester, New YorkAges 18 years+ - NCT06489782Recruiting
New approach to test alcohol use disorder medications
This study tests a new way to quickly screen medications for alcohol use disorder (AUD). You will have lab sessions where your drinking is monitored to see how different medicines affect your alcohol use.
New Haven, ConnecticutAges 21–65 - NCT06494904RecruitingPhase 3
Standard vs. High Dose Buprenorphine in the ER
This study compares a higher dose of buprenorphine (a medicine that helps stop opioid cravings and withdrawal) to the usual dose, given in the emergency department. It aims to see if the higher dose works better to start treatment for opioid use disorder.
Oakland, CaliforniaAges 18–65 - NCT06494891RecruitingPhase 2
Understanding motivation for IV alcohol drinking
This study looks at why people with alcohol use disorder choose to drink alcohol given through an IV. The goal is to better understand the motivation behind drinking, which could help improve treatments.
Los Angeles, CaliforniaAges 21–65
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Common questions
- Are there clinical trials for drug use disorders?
- Yes. Clin2 currently lists 287 recruiting drug 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 drug 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 drug 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.