Clinical trials · California
Overweight clinical trials in California
We’re tracking 74 recruiting overweight studies with a site in California — including Phase 1, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07845500RecruitingPhase 3
Monthly shot to help keep weight off after switching from semaglutide or tirzepatide
This study tests a new once-a-month medicine for people who have already been taking a weight-loss medication and want to keep the weight off. Participants will switch from their current medicine (semaglutide or tirzepatide) to the study drug.
Los Angeles, CaliforniaAges 18 years+ - NCT07595549RecruitingPhase 3
Testing Berobenatide for Weight Loss in Overweight Adults
This study tests a new medicine called berobenatide to help people with overweight or obesity lose weight. The medicine may also help improve related health conditions like high blood pressure, high cholesterol, or type 2 diabetes.
Canoga Park, CaliforniaAges 18 years+ - NCT07855133RecruitingPhase 1
Switching to a new treatment for weight or diabetes
This study tests a new medicine called zenagamtide for adults with overweight or obesity, with or without type 2 diabetes, who are currently taking semaglutide. The goal is to see how well people tolerate switching from semaglutide to the new treatment.
Glendale, CaliforniaAges 18 years+ - NCT07868354RecruitingPhase 1
Switching to a new weight-loss medicine from tirzepatide
This study tests how well adults with overweight or obesity, with or without type 2 diabetes, tolerate switching from their current weight-loss medication (tirzepatide) to a new medicine called zenagamtide. It may help you understand if this new option is easier on your stomach.
Glendale, CaliforniaAges 18 years+ - NCT07843472RecruitingPhase 3
Petrelintide for weight loss in people with heart disease
This study tests a new medication called petrelintide to help people with overweight or obesity and heart disease lose weight. It may offer a new way to manage weight and improve heart health.
Los Angeles, CaliforniaAges 40 years+ - NCT07843485RecruitingPhase 3
Weight loss medication for adults with type 2 diabetes
This study tests a new medicine called petrelintide to help people with excess weight and type 2 diabetes lose weight and improve blood sugar control. It may be an option if you've struggled with weight loss through diet alone.
Los Angeles, CaliforniaAges 18 years+ - NCT07823608RecruitingPhase 3
Monthly study medicine for adults with sleep apnea and overweight who use a breathing machine
This study tests an investigational medicine taken once a month for adults with moderate to severe sleep apnea who are overweight or have obesity and use a CPAP or similar breathing machine. It aims to see if the medicine improves sleep-related breathing.
Riverside, CaliforniaAges 18 years+ - NCT07794579RecruitingPhase 3
Study of orforglipron for people with overweight at risk of health problems
This trial tests a new medicine, orforglipron, to help people with overweight who are at risk of developing weight-related health issues. It aims to see if the medicine can help with weight management and reduce risks before more serious conditions develop.
Lake Forest, CaliforniaAges 18 years+ - NCT07784725RecruitingPhase 3
Study of a weight loss injection for adults with obesity
This study tests a new medicine to help adults with obesity or overweight lose weight. It's for people who have had trouble losing weight in the past and don't have diabetes.
Escondido, CaliforniaAges 18 years+ - NCT07784270RecruitingPhase 3
Weight loss injection for adults with type 2 diabetes and overweight
This study tests a new injected medicine that may help people with type 2 diabetes and overweight or obesity lose weight. The trial will see how well it works and if it is safe compared to a placebo.
Bakersfield, CaliforniaAges 18 years+ - NCT07776509RecruitingPhase 3
Adding a new drug to current weight-loss therapy for adults with obesity or overweight
This study tests a new medication (AZD6234) added to your current weight-management medication (an incretin-based drug) to see if it helps with weight loss. You may be eligible if you are overweight or obese with related health issues or type 2 diabetes.
Escondido, CaliforniaAges 18 years+ - NCT07752979RecruitingPhase 2
New drug for weight loss in adults with obesity or overweight
This study tests an investigational drug called ABBV-295 to see if it helps adults with obesity or overweight who have weight-related health conditions lose weight. It may offer a new treatment option for managing weight and improving overall health.
Concord, CaliforniaAges 18–75 - NCT07743450RecruitingPhase 3
Daily oral medication for weight loss in adults with obesity and type 2 diabetes
This study tests a once-a-day pill for adults who are overweight or have obesity and also have type 2 diabetes. The goal is to see if the medication helps with weight loss and improves blood sugar control.
Banning, CaliforniaAges 18 years+ - NCT07743463RecruitingPhase 3
Daily pill for weight loss in adults with excess weight or weight-related health issues
This study tests a once-daily pill called ASC30 to help adults with obesity or overweight who also have conditions like high blood pressure, sleep apnea, or heart disease lose weight. The pill may work by affecting appetite and blood sugar, and the study aims to see how effective and safe it is.
Banning, CaliforniaAges 18 years+ - NCT07685808RecruitingPhase 2
Testing a weight loss injection for people with overweight or obesity
This study tests an injectable medication called Olatorepatide to help people with overweight or obesity lose weight. It is only for people without diabetes who meet specific body mass index (BMI) requirements.
Walnut Creek, CaliforniaAges 18 years+ - NCT07654374RecruitingPhase 3
Study of a new pill for weight loss and diabetes
This study tests a new daily pill (aleniglipron) to help adults with excess weight and type 2 diabetes lose weight and improve blood sugar control. It may be a good fit if you have a BMI of 27 or higher and your diabetes is managed with A1c between 6.5% and 10%.
Escondido, CaliforniaAges 18–79 - NCT07654361RecruitingPhase 3
A new pill for weight loss in obesity and overweight
This study tests an investigational pill called aleniglipron to see if it helps people with obesity or overweight who also have a weight-related health problem (like high blood pressure) lose weight safely. It is a Phase 3 trial, meaning it is in the final stages before seeking approval.
Escondido, CaliforniaAges 18–79 - NCT05912621RecruitingPhase 2
Tirzepatide for fat-related body dysfunction in overweight adults
This Phase 2 study tests whether tirzepatide can improve how your body handles fat (especially in people with overweight or obesity) and reduce fat-related “lipotoxicity.” It may help with body fat function and related health markers, but you must meet specific health and medication rules.
Palo Alto, CaliforniaAges 18–70 - NCT07594093RecruitingPhase 1
A study of REGN20934 for adults with overweight or obesity
This trial tests a new medication, REGN20934, to see how safe it is and how it works in the body for adults who are overweight or have obesity. It may help if you are looking for new treatment options.
Glendale, CaliforniaAges 18–65 - NCT07589608RecruitingPhase 2
Weight Loss Study With Two New Injectable Medications
This study tests two new injectable drugs (macupatide and eloralintide) alone or together to help adults with obesity or excess weight lose weight. The goal is to see if these medications are safe and effective for weight management.
Greenbrae, CaliforniaAges 18–75 - NCT07575399RecruitingPhase 3
Switching to a New Weight-Loss Medication From Current GLP-1
This trial tests whether switching from your current GLP-1 medication (like Ozempic or Wegovy) to a new drug called maridebart cafraglutide works as well or better for weight management. You must have already lost at least 10% of your body weight on your current GLP-1 and be doing well with it.
Palm Springs, CaliforniaAges 18–99 - NCT07566390RecruitingPhase 1
Testing a new weight-loss medicine in healthy adults
This early-stage study tests a new experimental medicine (NNC0113-5840) to see how it works in people who are overweight or have obesity. Researchers want to understand how the body processes this medicine and whether it's safe before testing it more widely.
Glendale, CaliforniaAges 18–55 - NCT07395687RecruitingPhase 2
Study of UBT251 for people with overweight or obesity
This trial tests different doses of UBT251, a new medicine, to see how well it helps people lose weight. It may be an option if you have overweight or obesity and meet certain age and BMI requirements.
Cypress, CaliforniaAges 18–65 - NCT07369011RecruitingPhase 3
Study of eloralintide for sleep apnea with obesity
This study tests an investigational medication called eloralintide to see if it can improve sleep apnea in people who are overweight or have obesity. You will receive either the study drug or a placebo (inactive shot), and your sleep and weight will be monitored over time.
Long Beach, CaliforniaAges 18 years+
Overweight trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting overweight studies listed above.
- Diablo Clinical Research · 5 studies
- Peninsula Research Associates · 3 studies
- Research Site · 3 studies
- Artemis Institute for Clinical Research · 2 studies
- California Clinical Trials Medical Group managed by PAREXEL · 2 studies
- Desert Oasis Healthcare Medical Group · 2 studies
- Institute for Metabolic Research Los Angeles · 2 studies
- NorCal Medical Research · 2 studies
What taking part in a overweight 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.
Overweight trials in other states
Common questions
- Are there overweight clinical trials in California?
- Yes. We're currently tracking 74 recruiting overweight 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 overweight 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 overweight 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 overweight 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.