Clinical trials · California
Pain clinical trials in California
We’re tracking 185 recruiting pain studies with a site in California — including Early Phase 1, Phase 1, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07505797Recruiting
Ultrasound imaging study for suspicious breast lesions
This study is testing a new ultrasound device (ATUSA) to see how well it can image breast lesions that have been classified as suspicious (BI-RADS 4 or 5). If you have a recent finding that needs further evaluation, this research might help improve detection methods.
Sacramento, CaliforniaAges 18–94 - NCT07509307RecruitingPhase 3
Study of a new medicine for weight loss and knee pain in osteoarthritis
This trial tests if a new medicine, NNC0487-0111, can help people with excess weight and knee osteoarthritis lose weight and reduce knee pain. It is for people who have had knee pain for at least three months and who can stop taking pain relievers for short periods before study visits.
Escondido, CaliforniaAges 18 years+ - NCT07561827RecruitingPhase 3
Nerve Block for Pain After Spine Surgery in Teens
This trial tests whether a numbing injection around the spine muscles (erector spinae plane block) reduces pain and the need for strong pain medications after back surgery for scoliosis in teenagers. The goal is to help young patients recover more comfortably.
San Francisco, CaliforniaAges 10–18 - NCT07581080Recruiting
Biofield therapy to ease fatigue from cancer immunotherapy
This study tests whether Reiki—a hands-on healing practice—can help reduce severe tiredness in cancer patients receiving immunotherapy drugs. If it works, it could offer patients another way to manage fatigue alongside their cancer treatment.
Irvine, CaliforniaAges 18 years+ - NCT07591584Recruiting
Digestive Enzyme Blend for Bloating and Gas Relief
This study tests whether a daily digestive enzyme supplement designed to break down certain hard-to-digest foods can reduce bloating and belly pain. You'll use a smartphone app to track your symptoms over several weeks to see if the enzyme helps.
Los Angeles, CaliforniaAges 18 years+ - NCT07625150Recruiting
PET/MRI Imaging Study of Kneecap Joint Osteoarthritis
This research study uses advanced imaging (PET and MRI scans) to better understand osteoarthritis in the front of the knee, where the kneecap meets the thighbone. You'll help researchers learn how to detect and track this condition earlier.
San Francisco, CaliforniaAges 18 years+ - NCT07463430Enrolling by invitationPhase 4
Suzetrigine for pain after non-mastectomy breast surgery
This trial tests a new pain medication, suzetrigine, for people having breast surgery (not mastectomy) who are expected to have moderate pain. It checks if this drug works well compared to standard options.
San Diego, CaliforniaAges 18 years+ - NCT07311889Enrolling by invitation
Patient satisfaction with ELIXIR MD during plastic surgery recovery
This study looks at how satisfied patients are with their recovery after plastic surgery when the ELIXIR MD device is used. It aims to understand if this device helps improve the recovery experience.
Irvine, CaliforniaAges 18 years+ - NCT07145346Enrolling by invitationPhase 4
Suzetrigine for pain relief after multiple rib fractures
This trial tests a new medicine, suzetrigine, for managing acute pain in adults who have broken three or more ribs from a blunt injury. It aims to see if this painkiller works well and is safe for you.
Orange, CaliforniaAges 18 years+ - NCT07003802Enrolling by invitation
Understanding back muscle control in disc injury
This study looks at how the brain controls back muscles in people with chronic disc injuries. It compares patients before surgery or physical therapy to healthy controls to better understand muscle function.
La Jolla, CaliforniaAges 18–60 - NCT06919640Enrolling by invitationPhase 1
Psilocybin and brain implant study
This trial tests whether psilocybin (the active ingredient in magic mushrooms) affects brain activity in people who already have a brain-sensing device implanted. It may help researchers understand how psilocybin works in the brain.
San Francisco, CaliforniaAges 21–75 - NCT06835582Enrolling by invitation
Checking Methadone and Its Breakdown Levels
This study is checking the levels of methadone and its breakdown products in your blood. It helps make sure the medication is working safely for conditions like opioid use disorder or chronic pain.
Lemon Grove, CaliforniaAges 18–70 - NCT06583395Enrolling by invitation
Meditation retreat study with fitness tracker
This trial studies people attending a 7-day meditation retreat to see how meditation affects well-being. You will wear a fitness tracker and answer surveys.
Palm Desert, CaliforniaAges 21 years+ - NCT06069154Enrolling by invitation
Freezing nerves for rib fracture pain
This study tests a procedure called cryoneurolysis, which uses cold to temporarily freeze nerves near broken ribs to relieve pain. It is for adults who have 1 to 6 recently broken ribs with at least moderate pain and are already getting a nerve block injection.
La Jolla, CaliforniaAges 18 years+ - NCT05444361Enrolling by invitation
Ultrasound freezing treatment for pain after mastectomy
This trial tests a “freezing” nerve procedure guided by ultrasound to help reduce pain after mastectomy. It aims to lessen postoperative pain by temporarily calming specific nerves involved in chest wall sensation.
Los Angeles, CaliforniaAges 18 years+ - NCT05247255Enrolling by invitationEarly Phase 1
Nerve block during hip replacement surgery
This early-stage study tests whether a specific nerve block to numb the lower back area can make total hip replacement surgery more comfortable. It looks at patients who are having planned (elective) hip replacement and whether the nerve block is safe and works well.
Santa Monica, CaliforniaAges 18 years+ - NCT05091905Enrolling by invitationPhase 4
Tested nerve-block pain pumps after arm or leg surgery
This trial studies whether a timed, stop-and-go pain medicine delivery works better than a steady drip after surgery. It’s done using a small catheter placed near a nerve to help control pain.
San Diego, CaliforniaAges 18 years+
Pain trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting pain studies listed above.
- University of California San Diego · 2 studies
- University of California San Diego Health · 2 studies
- University of California, Irvine Medical Center / UC Irvine Health · 2 studies
- University of California, San Francisco · 2 studies
- Cedars-Sinai Medical Center
- Desert Oasis Healthcare Medical Group
- ELIXIR MD Inc
- First Valley Medical Group
What taking part in a pain study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Pain trials in other states
Common questions
- Are there pain clinical trials in California?
- Yes. We're currently tracking 185 recruiting pain studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a pain study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every 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.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a pain trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New pain studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
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.