Clinical trials
Opioid Use Disorder, Severe clinical trials
Below are recruiting opioid use disorder, severe clinical trials, each written for real people, not researchers. We’re tracking 148 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05529927RecruitingPhase 2
Dexamphetamine given long-acting to reduce cocaine use
This Phase 2 study tests whether a long-acting form of dexamphetamine can reduce cocaine use in people with moderate to severe cocaine use disorder. It also checks safety, including heart and mental health side effects, while you attend study visits regularly.
The HagueAges 18 years+ - NCT05589753RecruitingPhase 1/Phase 2
Testing treatment for sleep breathing problems in people on opioids
This trial studies a treatment approach for sleep-disordered breathing (breathing problems during sleep) in Veterans who take prescription opioids. It may help doctors learn safer ways to manage sleep breathing issues that can be made worse by opioid use.
Detroit, MichiganAges 18–89 - NCT05614661Recruiting
Postpartum support for mothers using opioid treatment
This study tests a postpartum intervention for mothers diagnosed with opioid use disorder (or receiving opioid addiction treatment) to help during the period after having a baby. You may be eligible if you have a young child and can complete the study tasks, including possible questionnaires and an MRI if needed.
Ann Arbor, MichiganAges 18–50 - NCT05683184RecruitingPhase 1
Study medicine for opioid addiction in adults
This early-stage study tests a new approach for opioid use disorder in adults. It aims to understand safety and how the treatment may work in people with opioid addiction.
New Haven, ConnecticutAges 18 years+ - NCT05722561RecruitingPhase 2
E-cigarettes to reduce smoking in opioid use disorder
This Phase 2 study tests whether e-cigarettes can help people who use opioids (and also smoke cigarettes) cut down on combustible cigarette smoking. It looks at whether switching to e-cigarettes for “harm reduction” is safe and helps you smoke fewer cigarettes without requiring you to quit completely.
New York, New YorkAges 21–75 - NCT05829655RecruitingEarly Phase 1
Measuring drug cravings in people with opioid use disorder
This study tests whether the medication suvorexant can reduce drug cravings in people with opioid use disorder. You will take either suvorexant or a placebo and have your cravings measured in a safe setting.
Baltimore, MarylandAges 18–65 - NCT05834478RecruitingPhase 3
Noninvasive vagus nerve stimulation for opioid use disorder
This trial tests whether noninvasive vagus nerve stimulation can help people with opioid use disorder during supervised withdrawal and treatment afterward. It may be considered if you can safely move to medication or behavioral care after withdrawal.
Atlanta, GeorgiaAges 18–75 - NCT05957159RecruitingEarly Phase 1
Testing an alcohol brain imaging study based on opioid receptor balance
This early-phase study looks at how the brain’s opioid receptor balance may be different in people with alcohol use disorder (AUD), using brain scans and blood testing. It may help researchers understand why some people respond differently to alcohol and related treatments.
New Haven, ConnecticutAges 21–70 - NCT05985850RecruitingPhase 2
Can cannabis help with opioid addiction treatment?
This trial tests if adding a specific cannabis product to standard methadone treatment helps people with opioid use disorder. It's for adults over 25 who recently started methadone and have used cannabis before.
Vancouver, British ColumbiaAges 25 years+ - NCT06104280Recruiting
How opioid addiction meds affect sleep and eyes
This study tests how three common medications for opioid use disorder (methadone, buprenorphine, and naltrexone) affect eye function, sleep, and daily body rhythms. It may help find ways to improve treatment for opioid addiction.
Birmingham, AlabamaAges 18–80 - NCT06160232RecruitingPhase 2
Psilocybin therapy for severe alcohol use disorder
This trial tests whether psilocybin, a psychedelic substance, combined with talk therapy can help people with severe alcohol use disorder stop or reduce drinking. Participants will first complete a 4-week inpatient detox program before receiving psilocybin in a supervised setting.
BrusselsAges 21–64 - 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 - NCT06218706Recruiting
Focused ultrasound for severe opioid addiction
This trial uses focused ultrasound (sound waves aimed at a specific part of the brain) to help people who have severe opioid addiction that hasn't gotten better with other treatments. It may help reduce cravings and support recovery.
Morgantown, West VirginiaAges 22–60 - 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 - NCT06316830RecruitingPhase 2/Phase 3
Finding the best buprenorphine dose for opioid use disorder
This trial tests different doses of buprenorphine to find the safest and most effective one for treating opioid use disorder and preventing overdose. It is for people who have used fentanyl and are starting or continuing buprenorphine treatment.
Providence, Rhode IslandAges 18 years+ - NCT06323824RecruitingPhase 4
Methadone vs. buprenorphine for opioid use disorder treatment
This study compares two medications, methadone and buprenorphine, to see which helps people stay in treatment for opioid use disorder. You may be eligible if you are starting a new treatment episode.
Oakland, CaliforniaAges 18–99 - NCT06643988Recruiting
Memory and thinking study for opioid use disorder
This study looks at how people with opioid use disorder remember personal events. You'll do tasks on a cellphone and at home while taking medication for opioid use disorder.
Philadelphia, PennsylvaniaAges 18–60 - 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+ - NCT06487533Recruiting
Sensing opioid withdrawal and cravings with wearable sensors
This study uses wearable sensors to track physical signs of opioid withdrawal and cravings over 14 days. It aims to better understand these symptoms in people currently taking or planning to start medication for opioid use disorder.
Center City, MinnesotaAges 18–50 - NCT06585709Recruiting
Brain stimulation for opioid use disorder treatment
This trial tests if brain stimulation can help people starting buprenorphine for opioid use disorder. It aims to improve treatment outcomes and support recovery.
Durham, North CarolinaAges 18 years+ - NCT06617949RecruitingEarly Phase 1
Pain Control Study for New Mothers on Opioid Medication
This study looks at better ways to manage pain after childbirth for mothers who are taking medication for opioid use disorder. It aims to find which pain control method works best and is safest for you and your baby.
Milwaukee, WisconsinAges 18–40 - NCT06639464RecruitingPhase 2
Semaglutide to help with opioid recovery
This trial tests if semaglutide, a medicine sometimes used for weight management, can help people recovering from opioid use disorder stay on track. It is for adults who have already started buprenorphine treatment and are ready to take part in a research study.
Boston, MassachusettsAges 18 years+ - NCT06642181RecruitingPhase 1
Guanfacine and meditation with buprenorphine for opioid use disorder
This study tests if adding a medication called guanfacine and mindfulness meditation to standard buprenorphine treatment helps people with opioid use disorder. It looks at whether this combination can improve treatment outcomes and reduce opioid use.
Newark, New JerseyAges 18–55 - NCT06576323Recruiting
Support for mothers with opioid use disorder and babies in the NICU
This study aims to improve care for mothers with opioid use disorder and their babies with neonatal abstinence syndrome. Researchers will interview healthcare providers and mothers to develop better support programs.
Philadelphia, PennsylvaniaAges 18 years+
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Common questions
- Are there clinical trials for opioid use disorder, severe?
- Yes. Clin2 currently lists 148 recruiting opioid use disorder, severe 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 opioid use disorder, severe 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 opioid use disorder, severe 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.