Clinical trials
Opioid clinical trials
Below are recruiting opioid clinical trials, each written for real people, not researchers. We’re tracking 430 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06706375Recruiting
Comparing two types of penile nerve blocks for child circumcision
This study tests two ways of numbing the penis before circumcision in children. The goal is to see which method works better and causes less discomfort.
Lausanne, Canton of VaudAges Up to 17 years - NCT06699953Enrolling by invitation
EEG study of fentanyl and how it relates to drug liking
This study looks at how fentanyl affects brain waves (EEG) and whether those brain changes are linked to how much a person likes the drug. If you are having surgery with fentanyl, you may be able to join.
Palo Alto, CaliforniaAges 18 years+ - NCT06671002RecruitingPhase 4
Pain medicine safety study for kids having surgery
This study compares different pain medicines to see which works best and is safest for children after surgery for tonsil removal, gallbladder removal, or knee arthroscopy. It aims to help find the most effective and least risky pain control option.
Los Angeles, CaliforniaAges 12–20 - NCT06655883RecruitingPhase 3
Testing suvorexant for insomnia in people with opioid use disorder
This study tests whether the sleep medication suvorexant (Belsomra) can help people with opioid use disorder who also have trouble sleeping. If you are stable on medication for opioid use disorder and have not used opioids in the last month, this trial may be an option for you.
Garden Grove, CaliforniaAges 18–70 - NCT06639438Recruiting
Sensory outcomes in people who use opioids
This study looks at how opioids affect the senses in people having planned surgery. Researchers want to compare patients who use opioids (for pain or addiction) with those who don't, to see if there are differences in sensation.
Boston, MassachusettsAges 18 years+ - NCT06642649Recruiting
Comparing anesthesia types to reduce opioids in hysterectomy
This study compares general anesthesia alone to two types of combined anesthesia (general plus spinal) to see which reduces the amount of opioid painkillers needed during and after a laparoscopic hysterectomy. It may help patients recover with less reliance on strong pain medications.
Bellinzona, SwitzerlandAges 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 - NCT06592378Recruiting
Managing pain after a broken bone with a smartphone app
This trial tests whether a smartphone app can help patients manage opioid pain medication safely after being discharged from the emergency room with a broken bone. If you have a simple fracture and plan to take opioids for pain, the app may help you track your use and recovery.
Providence, Rhode IslandAges 6 years+ - NCT06571110Recruiting
Acupuncture for opioid pain relief in fibromyalgia
This study tests whether getting real acupuncture helps people with fibromyalgia who are already taking daily opioid pain medicine, compared to fake acupuncture (sham). The goal is to see if acupuncture can improve pain and reduce the need for opioids.
Irvine, CaliforniaAges 18–80 - NCT06556602Recruiting
Study to improve access to methadone treatment
This trial tests a new way to help people get methadone treatment by working with staff at opioid treatment programs. It might lead to better access for patients.
Tucson, ArizonaAges 18 years+ - NCT06563349RecruitingPhase 4
Magnesium study for kids having appendix surgery
This trial tests if magnesium sulfate can help children recover better after laparoscopic appendix removal. It aims to see if it reduces pain or other problems during and after surgery.
WarsawAges 1.5 years–18 years - NCT06555107Recruiting
Pain before emergency surgery and long-term pain after
This study looks at whether pain you feel before emergency surgery affects long-term pain after the surgery. It may help doctors find ways to prevent chronic pain in patients who have emergency orthopedic (bone/joint) or abdominal (belly) surgery.
AmiensAges 18 years+ - NCT06536517RecruitingPhase 2
Methadone during hysterectomy to reduce pain pills
This study tests whether a single dose of methadone given during minimally invasive hysterectomy (for non-cancer reasons) can reduce the need for opioid pain pills after surgery. It aims to see if this approach helps with pain control and lessens opioid use.
Baltimore, MarylandAges 18 years+ - NCT06544291RecruitingPhase 2
THC and CBD for pain and opioid use disorder
This study tests whether a combination of THC and CBD can help people who have both opioid use disorder and chronic low back pain. You would need to be on a stable dose of methadone and have used cannabis at least once in your life.
New Haven, ConnecticutAges 18–65 - NCT06526143Recruiting
Pain care pathway for recent veterans
This study tests a new approach to help veterans manage pain in their back, neck, knee, or shoulder after leaving the military. It includes phone or online check-ins and support tailored to your needs.
West Haven, ConnecticutAges 18 years+ - NCT06528288Recruiting
Numbing injection for pain relief after back fusion surgery
This study tests whether a special numbing injection (called an erector spinae plane block) given near the spine during surgery can reduce pain after lumbar fusion. If you qualify, you might have less pain and need fewer painkillers after your operation.
Worcester, MassachusettsAges 18 years+ - NCT06513156Recruiting
Care support for hospitalized patients with drug-related infections
This study is for people who are in the hospital with a serious infection caused by injection drug use. It aims to provide better care and support while you are in the hospital and after you leave.
Washington D.C., District of ColumbiaAges 18 years+ - 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 - NCT06466005Recruiting
Phone app to help reverse overdoses in Philadelphia
This trial tests a smartphone app that helps people quickly reverse an opioid overdose. If you live or work in certain Philadelphia neighborhoods, the app may help you save a life.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06469177Enrolling by invitation
Pain management app study for joint replacement recovery
This study tests a smartphone tool to help manage pain after hip, knee, or shoulder replacement. It aims to see if using the tool improves your recovery compared to standard care.
Dartmouth, Nova ScotiaAges 19 years+ - NCT06466941Recruiting
Understanding acute pain after surgery
This study surveys surgical patients about their pain and emotional experience to better understand acute pain. You may help by answering questions or sharing your story.
Boston, MassachusettsAges 18 years+ - NCT05620940RecruitingPhase 1
IV drug safety and absorption study in healthy men
This Phase 1 study tests two experimental medicines given by IV to healthy men. It checks safety and how the body absorbs and processes the drugs (their “pharmacokinetic” profile).
Herston, QueenslandAges 18–55 - NCT06423716RecruitingPhase 4
Duloxetine to reduce opioid use after knee replacement
This study tests whether taking the pain medication duloxetine before and after knee replacement surgery can reduce the need for opioid painkillers. It may help patients manage pain with fewer side effects from strong narcotics.
Toronto, OntarioAges 50 years+ - NCT06416020Recruiting
Support for starting addiction treatment in community settings
This study looks at ways to help people who have just started taking buprenorphine for opioid use disorder stick with their treatment. It tests extra support outside of a clinic to help you stay on track and feel better.
Washington D.C., District of ColumbiaAges 16 years+
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Common questions
- Are there clinical trials for opioid?
- Yes. Clin2 currently lists 430 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.