Clinical trials
Opioid clinical trials
Below are recruiting opioid clinical trials, each written for real people, not researchers. We’re tracking 441 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06084520Recruiting
Pain questionnaire study for opioid and non-opioid patients
This study tests two questionnaires for people with long-term pain. Researchers want to see if the tools work well for both those taking opioids and those who are not. Your answers can help improve pain care.
Uppsala, UpplandAges 18–75 - NCT06200181RecruitingPhase 3
Olanzapine for opioid misuse in cancer pain
This study tests if a medication called olanzapine can help reduce cravings and misuse of opioid pain medicines in people with cancer pain. You would take olanzapine or a placebo daily for a few weeks while continuing your usual care.
Houston, TexasAges 18 years+ - NCT06404983Recruiting
Opioid-free anesthesia for breast cancer surgery
This study tests whether breast cancer surgery can be done safely without using opioid pain medicines during anesthesia. The goal is to see if avoiding opioids leads to fewer side effects and a smoother recovery.
Ioannina, EpirusAges 18–99 - NCT06538558RecruitingPhase 1
Study of tezampanel for opioid withdrawal
This trial tests if tezampanel can help relieve withdrawal symptoms in people with opioid use disorder who are seeking treatment. Participants must already be in an outpatient addiction program.
Indianapolis, IndianaAges 18–65 - NCT06559969RecruitingPhase 2/Phase 3
IV vs Epidural Pain Medicine for Open Abdominal Surgery
This trial compares two ways to manage pain after major open abdominal surgery: giving pain medicine through an IV or through an epidural combined with numbing medicine. It aims to find which method works better for patients.
Iowa City, IowaAges 18–85 - NCT06565416Recruiting
Pain & opioid treatment in Native communities
This study is testing better ways to treat pain and opioid use in Native American communities. It may help if you have chronic pain or struggle with opioids.
Arcata, CaliforniaAges 18 years+ - NCT06590714Recruiting
Polmacoxib for pain after rotator cuff surgery
This trial tests if Polmacoxib, an anti-inflammatory drug, can reduce the need for stronger painkillers after rotator cuff surgery. It may help manage pain with fewer side effects.
Uijeongbu-si, Gyeonggi-doAges 18 years+ - NCT06593353Recruiting
Improving opioid use disorder care for people leaving jail
This study tests a system to improve care for people with opioid use disorder as they leave jail and return to the community. It aims to help patients stay in treatment and avoid interruptions.
Seattle, WashingtonAges 18–110 - NCT06607029Recruiting
Painkiller-free anesthesia for brain tumor surgery
This trial tests whether avoiding opioid painkillers during anesthesia for brain tumor removal can be safe and effective. It may help patients recover with fewer side effects.
BeijingAges 18–65 - NCT06774248Recruiting
Teen opioid recovery support program with medication
This study tests a program called YORS that helps teens with opioid use disorder stick with their medication. It involves you and a support person (like a parent) working together with the study team to stay on track.
Baltimore, MarylandAges 13–21 - NCT06800703Recruiting
Opioid use, pain, and the brain
This study uses brain scans (MRI) to understand how pain affects people with opioid use disorder or regular opioid use, compared to healthy volunteers. It aims to find better ways to treat both pain and opioid addiction.
New Haven, ConnecticutAges 21–60 - NCT06837857RecruitingPhase 2
Opioid pain relief study for older adults with chronic pain
This study tests whether a carefully managed prescription opioid can safely help older adults with long-term pain that hasn't been relieved by other pain medicines. The goal is to see if it improves pain without harming memory or brain health.
Rochester, MinnesotaAges 65 years+ - NCT06981195RecruitingPhase 2
Testing lemborexant for insomnia in people on buprenorphine
This study tests if the sleep medication lemborexant can help people with opioid use disorder who also have chronic insomnia. Participants must already be taking buprenorphine (Suboxone) for at least 4 weeks. The goal is to see if better sleep improves mood and reduces opioid use.
Richmond, VirginiaAges 18 years+ - NCT07079215Recruiting
Device trial for opioid withdrawal symptoms
This trial tests a physical device (ADTPM 1) to help manage withdrawal symptoms in people who are dependent on opioids. The goal is to see if the device can safely reduce withdrawal discomfort.
Daegu, DaeguAges 19–80 - NCT07079241Recruiting
Volunteer naloxone responders for opioid overdose emergencies
This trial trains volunteers to give naloxone, a medication that reverses opioid overdoses, using a smartphone app to alert nearby responders. It could help save lives by getting antidote treatment to overdose victims faster.
Malmö, Skåne CountyAges 18 years+ - NCT07197801Recruiting
Peer support program for opioid use disorder treatment
This study tests if a peer recovery support program helps people stay in treatment for opioid use disorder. Participants who recently started medication for opioid use disorder may get extra support from a peer who has been through recovery themselves.
Danville, PennsylvaniaAges 18–89 - NCT07231796Recruiting
Study of naldemedine for opioid-induced constipation in cancer patients
This trial tests whether naldemedine, a medication for constipation, can help cancer patients who have constipation caused by opioids. It looks at how well it works and how patients feel.
AmsterdamAges 18 years+ - NCT07348627RecruitingPhase 3
Opioid-free hip replacement study
This trial tests if using fewer opioids after hip replacement surgery can still control pain well. It uses a specific type of hip replacement called anterior total hip arthroplasty and aims to help patients recover with less reliance on strong pain medicines.
Atlanta, GeorgiaAges 18 years+ - NCT07490717Enrolling by invitation
Treating PTSD and opioid use in jails
This study tests new ways to screen and treat people in jail who have both post-traumatic stress disorder (PTSD) and opioid use disorder. It aims to help participants with therapy while incarcerated and after release.
Little Rock, ArkansasAges 18 years+ - NCT07202026Enrolling by invitation
Opioid tapering decision aid for long-term pain patients
This study tests a decision aid to help people who have been taking opioids for chronic pain decide if and how to safely reduce their dose. It aims to support patients and doctors in making careful, personalized choices.
Seattle, WashingtonAges 18 years+ - 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+ - NCT06454903Recruiting
Smartphone app support for veterans treating opioid use disorder
This study tests a smartphone app to support Veterans in their recovery from opioid use disorder. The app aims to improve daily functioning alongside medication treatment.
West Haven, ConnecticutAges 18 years+ - NCT07044466Recruiting
Social functioning study for people in treatment for opioid use
This study looks at how people recovering from opioid use disorder get along with a close friend or family member (called a CSO). It may help improve social support during early treatment.
Charleston, South CarolinaAges 18 years+ - NCT03135886Recruiting
Testing for HIV in opioid treatment programs
This project studies how to improve offering and completing HIV (and hepatitis C) tests in opioid treatment programs. It may help increase timely follow-up and linkage to care when results are positive.
New York, New YorkAges 18 years+
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Common questions
- Are there clinical trials for opioid?
- Yes. Clin2 currently lists 441 recruiting opioid 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 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 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.