Clinical trials
Opioid clinical trials
Below are recruiting opioid clinical trials, each written for real people, not researchers. We’re tracking 443 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05995535RecruitingPhase 2
Pregabalin and Lofexidine for Opioid Withdrawal
This study tests whether combining two medications, pregabalin and lofexidine, can help people stop using opioids by easing withdrawal symptoms. It's for adults who use opioids heavily and want to switch to a non-addictive blocker medication.
Baltimore, MarylandAges 18 years+ - NCT07553611Recruiting
Regional anesthesia and shoulder surgery recovery outcomes
This study compares different numbing techniques used during shoulder arthroscopy (a minimally invasive shoulder surgery) to see which one helps patients recover better, use less pain medication, and experience fewer complications like temporary paralysis of the breathing muscle under the rib cage.
Antalya, MuratpaşaAges 18–65 - NCT07178262RecruitingPhase 4
Nerve block to reduce pain medicine after hysterectomy
This study tests whether a nerve block (an injection near the spine) can help reduce the amount of strong pain medicine you need after a hysterectomy. The goal is to see if it leads to fewer side effects and a smoother recovery.
Islamabad, FederalAges 16–80 - NCT07227389Recruiting
Opioid Timing and Breathing Risk After Surgery
This study looks at when opioids are given during surgery and how it affects breathing problems after surgery. It might help understand how to make pain control safer.
Detroit, MichiganAges 18–85 - NCT05577962RecruitingPhase 4
Recovery quality after thyroid surgery with and without opioids
This study compares two types of anesthesia for thyroid surgery: one with opioids (strong painkillers) and one without. The goal is to see which approach helps patients recover better right after surgery, with fewer side effects.
Beijing, Beijing MunicipalityAges 18–99 - NCT06689072Enrolling by invitation
High-frequency brain stimulation for opioid use disorder
This study tests whether a treatment called repetitive transcranial magnetic stimulation (rTMS) can help people with opioid use disorder. It involves a non-invasive procedure that uses magnetic pulses to stimulate certain parts of the brain.
Asyut, Asyut GovernorateAges 18–45 - NCT06488768Recruiting
Nerve block duration in people on vs. off opioids
This study compares how long a numbing nerve block lasts in people who take strong pain medicines (opioids) every day versus those who do not take opioids. It will help doctors understand if pain relief lasts a different amount of time for people on long-term opioids.
SilkeborgAges 18–84 - NCT06292078Recruiting
School program to prevent opioid misuse and exclusion
This trial tests a school-wide program called ISLA that aims to reduce opioid misuse and keep students in school. It will involve all staff and 7th graders at participating middle schools in Oregon.
Capitola, CaliforniaAges 8–15 - NCT04044820Recruiting
Help after outpatient hand and forearm surgery with opioid use
This study looks at how opioid (pain medicine) use should be managed after you go home following outpatient hand and forearm surgery. It may help you avoid using more opioid than needed while still controlling pain.
Toronto, OntarioAges 18 years+ - NCT07386769Recruiting
Brain activity during social interaction in opioid use
This study looks at how the brain works during social interactions in people who use opioids regularly. It may help researchers understand how opioid use affects the way you connect with others.
La Jolla, CaliforniaAges 18 years+ - NCT07278375Recruiting
Comparing treatments for babies with opioid withdrawal
This study looks at different medicine approaches to treat newborns with opioid withdrawal (NOWS). It compares how well babies do with standard care and may help find the best way to manage symptoms and support recovery.
Birmingham, AlabamaAges birth+ - NCT05588323RecruitingPhase 1/Phase 2
Testing naldemedine for constipation caused by opioid pain meds
This study tests whether naldemedine is safe and how the body processes it in children who take opioid medicines and are dealing with constipation or are at risk for it. It may help some children by reducing constipation side effects from opioid pain treatment.
TiranaAges 2–18 - NCT06969261Recruiting
Chatbot to support pregnant women with opioid use disorder
This study tests a chatbot to help pregnant and new mothers being treated for opioid use disorder. The goal is to provide extra support and information during and after pregnancy.
Philadelphia, PennsylvaniaAges Any age - NCT07665502Enrolling by invitation
Smartphone app to boost opioid treatment for women facing violence
This study tests a smartphone app (WINGS+++) to help women who have experienced intimate partner violence and trauma improve their engagement with medication for opioid use disorder (MOUD). The goal is to see if the app makes it easier to start and stay on treatment.
New York, New YorkAges 18 years+ - NCT07717151Recruiting
Preventing long-term pain after surgery for chronic opioid users
This trial tests a method to prevent chronic pain after surgery in people who already take opioids regularly. It may help reduce long-term pain and improve recovery.
AmiensAges 18 years+ - NCT07420283RecruitingPhase 2
Study of Brenipatide for opioid use disorder
This trial tests a new medicine called Brenipatide for people with opioid use disorder who are already taking buprenorphine but still occasionally use non-prescribed opioids. It aims to see if the study drug can help reduce opioid use.
Phoenix, ArizonaAges 18–75 - 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 - NCT06067737RecruitingPhase 2
Psilocybin and buprenorphine for opioid use disorder
This study tests whether adding psilocybin (a psychedelic medicine) to buprenorphine (a medication for opioid use disorder) can help people stop using opioids and stay in recovery. It is for people who have already been on buprenorphine but are still using other opioids.
Baltimore, MarylandAges 21–70 - NCT03720613Recruiting
Testing medicines to prevent heart events in opioid constipation
This study looks at how well naldemedine (and certain other constipation medicines) lower the risk of major heart problems in people who take opioids for constipation. It compares medicine use patterns in people with opioid-induced constipation to see who has fewer serious heart events.
Wilmington, DelawareAges 18 years+ - 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 - NCT06415994Enrolling by invitation
Placental imaging and outcomes in opioid use disorder in pregnancy
This study looks at how the placenta and baby's development may be affected when a mother takes buprenorphine or methadone for opioid use disorder during pregnancy. It aims to find better ways to monitor health and improve outcomes for both mothers and babies.
Indianapolis, IndianaAges 18–100 - NCT04197921Recruiting
Brain-focused ultrasound for opioid addiction-related substance use
This trial studies Exablate, a non-surgical brain treatment that aims to change activity in a specific brain area involved in cravings and substance use. It is meant for people in structured opioid or substance use treatment who are currently abstaining from opioids and other illicit drugs.
Tampa, FloridaAges 18–60 - NCT04234191RecruitingPhase 2
Test faster buprenorphine/naloxone start versus usual start for opioid use disorder
This Phase 2 study compares a rapid way to start buprenorphine/naloxone versus the standard way, for people with opioid use disorder. It aims to see whether the faster start is safe and works well enough to help people begin treatment sooner.
Vancouver, British ColumbiaAges 19 years+ - NCT04354077Recruiting
Deep brain stimulation for opioid use disorder cravings
This trial studies whether deep brain stimulation (a device that delivers small electrical signals to the brain) can reduce cravings and improve symptoms in adults with opioid use disorder. You may be eligible if you have a long history of opioid dependence and have tried multiple treatment options without lasting success.
Pittsburgh, PennsylvaniaAges 22–65
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Common questions
- Are there clinical trials for opioid?
- Yes. Clin2 currently lists 443 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.