Treatment
Opioid clinical trials
We’re tracking 430 recruiting studies that include Opioid, each written for real people, not researchers, below.
Recruiting studies
- NCT06077422Enrolling by invitationPhase 2/Phase 3
Comparing two pain blocks for heart surgery recovery
This trial compares two types of pain blocks (Exparel vs. Marcaine) given during heart surgery to see which one provides better pain relief. If you are scheduled for a heart surgery through a small or full chest incision, you may be able to join.
New Brunswick, New JerseyAges 18 years+ - NCT06033599RecruitingPhase 3
Mindfulness and motivation to quit smoking while on methadone
This study combines counseling (motivational interviewing) with mindfulness training (like guided exercises) to help people on methadone quit smoking. It tests if adding mindfulness can make it easier to stop smoking and stay quit.
New Brunswick, New JerseyAges 18 years+ - NCT06051890RecruitingPhase 4
Assessing switching to long-acting buprenorphine injection in jail
This study tests whether switching from daily buprenorphine/naloxone (Suboxone) to a long-acting injectable buprenorphine (XRB) is safe and effective for men who are unsentenced and in jail for at least 4 days. It aims to see if the injection can help continue treatment without needing daily medication.
Boston, MassachusettsAges Any age - NCT05988710RecruitingPhase 4
Low-dose buprenorphine for pain in opioid-naive adults
This study tests a low-dose form of buprenorphine (a medicine for pain) placed inside the cheek. It is designed for people who have never taken opioids before, to see how well it works for pain and how likely it is to be misused.
Nashville, TennesseeAges 18–65 - NCT06001749RecruitingPhase 2
Psilocybin for cancer pain study
This trial tests whether psilocybin (a psychedelic drug) can help with severe cancer pain. You may qualify if your pain is high despite strong medications and you are willing to be monitored closely.
Boston, MassachusettsAges 18 years+ - NCT05973838Recruiting
Telemedicine support plus recovery coaching for multiple drug use
This study tests whether adding peer recovery support to a phone/video treatment program helps people stay in treatment longer and reduce polysubstance use. It focuses on adults in opioid use disorder care who have used other non-prescribed substances in the last three months.
Washington D.C., District of ColumbiaAges 18 years+ - 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 - NCT05940324RecruitingPhase 2
Ketamine study for OCD after prior treatment failed
This Phase 2 study tests how ketamine may work quickly in people with obsessive-compulsive disorder (OCD), especially after at least one standard treatment didn’t help. If you join, you’ll need to follow study procedures like fasting before the experimental visit and not enrolling in other medication trials during the study.
Stanford, CaliforniaAges 18–65 - NCT05893030Recruiting
Monitoring pain and sleep medicines to prevent complications after surgery
This study looks at whether closely monitoring opioid and sleep medicines during and after surgery can lower organ problems and death in older adults at high risk. If you qualify, your team will track how these medicines are given to help keep you safer in the postoperative period.
AmiensAges 75 years+ - NCT05905146Recruiting
Personalized opioid plan to shorten treatment time
This trial tests whether a personalized medication plan can help patients with short-term, non-cancer muscle or joint pain need strong opioid medicine for a shorter time. It’s aimed at improving how long treatment lasts while still managing pain.
LilleAges 18 years+ - NCT05856136RecruitingPhase 4
Study how opioid exposure affects diaphragm muscle function
This study looks at whether receiving opioids for pain during lower-leg surgery changes how well the diaphragm muscle (the main breathing muscle) works afterward. It compares breathing muscle function in people who do and do not have certain lung conditions.
Rochester, MinnesotaAges 18 years+ - NCT05761860RecruitingEarly Phase 1
Oxytocin to lower opioid misuse risk and pain in older adults
This early-phase study tests whether oxytocin (a hormone-like medication) can reduce how “appealing” opioids feel and also reduce pain. It’s aimed at older adults who have used opioids before but are not currently dealing with chronic pain most days.
Gainesville, FloridaAges 45–85 - NCT05769348Recruiting
PET brain study to test opioid signaling in migraine
This study uses brain scans (PET) to look at how the body’s “opioid” pain system works in people with migraine. It may help researchers understand migraine biology and test approaches that could improve migraine treatment.
Ann Arbor, MichiganAges 18–65 - NCT05769218Recruiting
Rapid HIV prevention and opioid treatment access for people who inject
This study helps people who inject drugs start HIV prevention (PrEP) and medication for opioid use disorder (MOUD) faster. It may reduce HIV risk and improve access to treatment, while the study checks whether the “rapid access” approach works.
Boston, MassachusettsAges 18 years+ - NCT05766891RecruitingPhase 2/Phase 3
Hypnosis to reduce pain medication during breast cancer surgery
This trial tests whether talking with a nurse and using hypnosis before surgery can reduce the need for pain medicine during and after surgery. It aims to help you recover with less pain and fewer side effects from opioids.
Houston, TexasAges 18 years+ - NCT05722002RecruitingPhase 4
Compare pain-med plans after low-risk surgery
This study tests which pain-medication plan works best and has the fewest side effects after certain low-risk surgeries. You may be assigned to receive opioid-based, NSAID-based, or acetaminophen-based pain control depending on your situation.
Ann Arbor, MichiganAges 18 years+ - NCT05675735Recruiting
Methadone take-home program to help people stay in treatment
This trial studies whether changing how methadone is allowed to be taken home can improve how long people stay in opioid use disorder treatment. It focuses on clinics and on adults who have already been receiving take-home methadone.
Storrs, ConnecticutAges 18 years+ - NCT05658796Recruiting
Program to reduce opioid use after hip or knee replacement
This trial tests a support program called RXWell to help people use less opioid pain medicine after elective hip or knee replacement surgery. It may help by addressing anxiety and depression symptoms that can affect pain and recovery.
Monroeville, PennsylvaniaAges 18–100 - NCT05669534RecruitingPhase 4
HIV prevention support for people starting PrEP
This study tests how to better support HIV prevention for people who inject drugs and are newly starting PrEP (medicine to prevent HIV). It focuses on people taking medication for opioid use disorder and who have mild thinking and memory problems, to help them stay safe and adhere to prevention.
New Haven, ConnecticutAges 18 years+ - NCT05579470Recruiting
Study opioid treatment access with staff, patients, and local leaders
This study looks at how to expand opioid addiction treatment in Central Asia by gathering survey and discussion input from people with opioid dependence, people delivering treatment, and local health leadership. It may help improve how treatment programs are set up and delivered in the future.
New Haven, ConnecticutAges 18 years+ - NCT05589181RecruitingPhase 3
High-dose buprenorphine start in the emergency department for fentanyl use
This Phase 3 study tests whether starting a high dose of buprenorphine in the emergency department helps people with opioid use disorder come through withdrawal more safely and effectively. It focuses on people whose urine test shows fentanyl and who are already in withdrawal when they arrive.
Newark, New JerseyAges 18 years+ - NCT05555485Recruiting
Check if ear stimulation can help chronic pain and reduce opioids
This study tests whether a device that stimulates the ear (through the skin) can reduce chronic pain and help people lower their opioid pain medicine. It may help you manage pain with less opioid use if you meet their safety and medication criteria.
Galveston, TexasAges 18–65 - NCT05547048RecruitingPhase 4
Phone-based support to help prevent HIV in justice-involved women
This study tests an integrated phone-based health program (e-health) designed for women involved with the justice system who have opioid use disorder. It aims to help people who qualify for HIV prevention (PrEP) stay protected, especially by using simple, ongoing support through phone access.
Birmingham, AlabamaAges 18 years+ - NCT05487911Recruiting
Brain stimulation for depression
This study uses a non-invasive brain stimulation technique called repetitive transcranial magnetic stimulation (rTMS) to treat depression. It may help reduce depressive symptoms for people who have not found relief from other treatments.
Houston, TexasAges 18–64
Common questions
- Are there clinical trials studying Opioid?
- Yes. Clin2 currently lists 430 recruiting studies that include Opioid, drawn from the U.S. registry and rewritten for real people so you can see what each is testing and who it's for.
- How do I know if I qualify for a Opioid trial?
- Each study lists its own eligibility criteria — rules about condition, age, and prior treatments. On every Clin2 trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Is Opioid an approved treatment?
- A drug being studied in a trial may be investigational (still being tested) or already approved and being studied for a new use. Each study page explains what phase it's in. Clin2 does not provide medical advice — talk with your doctor about whether Opioid or a specific trial is right for you.
Related treatments
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. A drug appearing here is being studied in a trial and may be investigational. Talk with your doctor about whether a specific treatment or trial is right for you.