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
- NCT07513974Recruiting
Pain sensitivity test to predict opioid needs in heart surgery
This study measures how sensitive you are to pain using a special device, then tracks how much pain medication you need during heart surgery. The goal is to see if pain sensitivity can predict opioid requirements and help doctors customize pain control for you.
Brussels, AnderlechtAges Any age - NCT07269106RecruitingPhase 4
Testing anrikefon for pain relief after eye surgery
This trial tests a new painkiller called anrikefon for people having eye surgery under general anesthesia. It aims to see if it's safe and effective for controlling pain after the procedure.
Guangzhou, GuangdongAges 18–70 - 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+ - NCT07370129Enrolling by invitation
Numbing injection for pain after tonsil surgery
This study tests a numbing injection near a nerve in your nose to see if it can reduce pain and help you recover faster after tonsillectomy. It is a non-drug approach that may offer an alternative to strong pain medicines.
Ankara, AnkaraAges 12 years+ - NCT07284615Recruiting
Nerve Block vs. Wound Injection for Hip Replacement Pain
This trial compares two pain-relief methods after hip replacement surgery: a nerve block (numbing the hip area) versus a numbing injection into the wound. The goal is to see which provides better pain control.
Cinisello Balsamo, MilanoAges 18 years+ - NCT07276646Recruiting
Pain relief after gallbladder surgery: two nerve blocks compared
This trial compares two anesthetic nerve blocks to see which one reduces the need for opioid pain medicine after gallbladder removal. If you are having laparoscopic gallbladder surgery, this study may help you recover with less pain and fewer opioid side effects.
ZagazigAges 21–64 - 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+ - NCT05842928Recruiting
Deprescribing risky medicines in older adults with many medications
This study tests a patient-centered plan to safely reduce certain medicines that may cause side effects in older people who take many drugs. It aims to improve safety and comfort by lowering unnecessary use while keeping you well.
BielefeldAges 65 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+ - 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+ - 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 - NCT07461376Recruiting
A trial comparing two sleep medicines for children before surgery
This study tests two oral medicines given before surgery to help children relax and lower the need for stronger painkillers after the operation. It is for children having surgeries like hernia repair, circumcision, or hypospadias correction.
Cairo, Giza GovernorateAges 3–12 - 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+ - NCT06288256Recruiting
Spine surgery study: genes, thinking, and pain
This study is for people getting planned spine surgery. It looks at how your genes and thinking skills might affect your pain and use of pain medicine after surgery.
New York, New YorkAges 18 years+ - NCT07595679Recruiting
Pain Relief Methods for Gallbladder Surgery
This study compares two types of numbing injections given during laparoscopic gallbladder removal surgery to see which one reduces the need for strong pain medications during the procedure. You would receive one of these two injection methods as part of your anesthesia care.
Ankara, YenimahalleAges 18–80 - NCT07323043Recruiting
Comparing tegileridine and sufentanil for cough during anesthesia
This trial tests whether tegileridine causes less coughing than sufentanil when given as part of anesthesia for surgery. It aims to find a better painkiller option for patients having surgery with a breathing tube.
Lianyungang, JiangsuAges 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+ - NCT06994442RecruitingPhase 3
Best pain relief for children on a breathing tube
This study tests adding extra pain medicines (acetaminophen or an NSAID) to usual opioid pain treatment for children on a breathing machine. The goal is to find the safest and most effective way to manage pain.
Little Rock, ArkansasAges 2 months–17 years - NCT07734623Recruiting
Ultrasound treatment for severe opioid or amphetamine use disorder
This trial tests a low-intensity focused ultrasound treatment for people with severe opioid or amphetamine use disorder. The ultrasound targets a part of the brain linked to addiction, and the goal is to see if it is safe and helpful.
TaipeiAges 20–50 - NCT07064564RecruitingPhase 1
Study comparing naltrexone implants with monthly injection in healthy volunteers
This trial compares two forms of naltrexone (a medication used for alcohol and opioid dependence) in healthy volunteers. It tests how well the body processes and tolerates a low or high-dose implant versus the standard monthly injection.
Millcreek, UtahAges 18–65 - NCT07421102RecruitingEarly Phase 1
Mailing buprenorphine after hospital stay
This study tests whether mailing buprenorphine (a medication for opioid use disorder) to patients after they leave the hospital helps them stay on treatment. If you started buprenorphine in the hospital and are heading home to South Carolina, this option might make it easier to continue your recovery.
Charleston, South CarolinaAges 18 years+ - NCT07104825Recruiting
Nerve block for pain after weight loss surgery
This trial tests if a nerve block can help control pain after gastric bypass or sleeve gastrectomy. The goal is to reduce the need for strong pain medicines and improve recovery.
Evanston, IllinoisAges 18–90 - NCT06851533Recruiting
Pain relief methods for lumbar microsurgery recovery
This trial compares two different types of nerve blocks to see which one reduces the need for strong pain medicine after lumbar microsurgery. It may help patients have better pain control and fewer side effects from opioids.
IstanbulAges 18–80 - NCT07714785Recruiting
EEG-guided anesthesia for better recovery after tonsillectomy
This study tests whether using brain-wave monitoring (EEG) during anesthesia with sevoflurane can reduce the amount of pain medicine needed after tonsillectomy and improve how smoothly children wake up. It could help your child have a more comfortable recovery.
Santiago, RegiónAges 2–8
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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.