Obesity clinical trials in California
99 studies for Obesity are looking for participants at sites in California.
Cities in California
- Los Angeles25 studies
- San Diego24 studies
- Concord16 studies
- Escondido11 studies
- Torrance8 studies
- Tustin8 studies
- Santa Ana8 studies
- El Cajon8 studies
- Sacramento7 studies
- Huntington Beach7 studies
- Santa Monica7 studies
- Westminster6 studies
- Glendale6 studies
- Orange6 studies
- Santa Clarita6 studies
- Chula Vista5 studies
- Mountain View5 studies
- Long Beach5 studies
- South Gate5 studies
- Simi Valley5 studies
- West Covina5 studies
- Indio5 studies
- Hawthorne4 studies
- Lake Forest4 studies
- Richmond4 studies
- Buena Park4 studies
- San Francisco4 studies
- Pomona4 studies
- Irvine4 studies
- Riverside3 studies
- Modesto3 studies
- Ontario3 studies
- Anaheim3 studies
Home Self-administration of Maridebart Cafraglutide With Autoinjector in Adults Living With Obesity or Overweight
- Apex Clinical Research, San Diego
RecruitingPhase 3
Ages 18 to 99 · All sexes · Updated Nov 9, 2026 · NCT07871409A Clinical Study to Evaluate the Effects of Enicepatide (RO7795068) in Participants With Obesity or Overweight Without Type 2 Diabetes
- University of California Irvine, Irvine
- Artemis Institute for Clinical Research, LLC, San Diego
- Diablo Clinical Research, Inc., Walnut Creek
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 9, 2026 · NCT07351045A Study to Evaluate Effect of AZD6234 as an Adjunct to Incretin-based Therapies in Adult Participants With Obesity or Overweight With Weight-related Comorbidity With or Without Type 2 Diabetes Mellitus
- Research Site, Escondido
- Research Site, Lincoln
- Research Site, Walnut Creek
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 9, 2026 · NCT07776509A Clinical Study to Evaluate the Effects of Enicepatide (RO7795068) in Participants With Obesity or Overweight and Type 2 Diabetes
- University of California Irvine, Irvine
- Orange County Research Center, Lake Forest
- Ark Clinical Research, Long Beach
- and 4 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 9, 2026 · NCT07351058A Study to Investigate Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of AZD1043 in Healthy Adult Participants Living With Overweight and/or Obesity.
- Research Site, Glendale
RecruitingPhase 1Healthy volunteers welcome
Ages 18 to 65 · All sexes · Updated Nov 9, 2026 · NCT07511205An Online Intuitive Eating Program for Pregnant Women With Obesity to Support Well-Being
- San Diego State University, San Diego
- UC San Diego Health, San Diego
Recruiting
Ages 18 and older · Women · Updated Nov 6, 2026 · NCT07792837Study of Olatorepatide in Adult Participants Living With Overweight or Obesity Without Diabetes
- Diablo Clinical Research - Flourish Research, Walnut Creek
RecruitingPhase 2
Ages 18 and older · All sexes · Updated Nov 6, 2026 · NCT07685808Efficacy, Safety and Tolerability of Switching From Glucagon-like Peptide-1 Receptor Agonists (GLP-1RA) to Maridebart Cafraglutide in Adults With Obesity or Overweight (MARITIME-SWITCH)
- Peninsula Research Associates, Chula Vista
- Desert Oasis Healthcare Medical Group, Palm Springs
- Inland Empire Liver Foundation, Rialto
- and 2 more
RecruitingPhase 3
Ages 18 to 99 · All sexes · Updated Nov 6, 2026 · NCT07575399A Study to Learn How Different Forms of the Study Medicine Called Berobenatide is Taken up Into the Blood in Adults With Overweight or Obesity
- Anaheim Clinical Trials, LLC, Anaheim
RecruitingPhase 1Healthy volunteers welcome
Ages 18 and older · All sexes · Updated Nov 6, 2026 · NCT07876531A Study to Learn About the Monthly Dosing Study Medicine Called Berobenatide in Adults With Breathing Problems During Sleep and Overweight or Obesity Who Use a Breathing Machine (PAP) (VESPER-OSA 1)
- Probe Clinical Research Corporation, Riverside
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07823608A Study to Learn About Switching to a Monthly Study Medicine Called Berobenatide (PF-08653944) to Help Keep Weight Off in People With Overweight or Obesity
- San Fernando Valley Health Institute, Canoga Park
- Velocity Clinical Research - Los Angeles, Los Angeles
- Headlands Research Sacramento, Sacramento
- and 3 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07845500Maridebart Cafraglutide Versus Semaglutide in Participants With Type 2 Diabetes
- Acclaim Clinical Research, San Diego
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07866066A Phase III Study to Evaluate the Efficacy and Safety of Petrelintide in Participants With Overweight or Obesity and Type 2 Diabetes
- Institute for Metabolic Research Los Angeles, Los Angeles
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07843485A Study to Learn About Study Medicine Called Berobenatide in Adults With Knee Pain and Overweight or Obesity (VESPER-OA 1)
- Headlands Research California, LLC, Escondido
- Prospective Research Innovations Inc., Rancho Cucamonga
- Solace Clinical Research, Tustin
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07919678A Study to Learn About the Study Medicine Called Berobenatide (PF-08653944) in People With Overweight or Obesity
- San Fernando Valley Health Institute, Canoga Park
- Headlands Research California, LLC, Escondido
- ImmuniMet, LLC, Modesto
- and 4 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 5, 2026 · NCT07595549A Study of EloraTZP in Adult Participants With Obesity or Overweight and Type 2 Diabetes
- Pacific Clinical Studies Inc., Los Alamitos
- Los Angeles Institute for Metabolic Research, Los Angeles
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07881458A Study to Investigate the Effectiveness of Tirzepatide (LY3298176) Following Initiation of Ixekizumab (LY2439821) in Participants With Moderate-to-Severe Plaque PsO and Obesity or Overweight in Clinical Practice (TOGETHER AMPLIFY-PsO)
- First OC Dermatology Research Inc, Fountain Valley
- Center For Dermatology Clinical Research, Inc., Fremont
- Metropolis Dermatology, Los Angeles
- and 1 more
RecruitingPhase 4
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT06857942Efficacy, Safety, and Pharmacokinetics of Tirzepatide (LY3298176) Once Weekly Versus Placebo in Pediatric Participants 6 to Less Than 12 Years of Age Who Have Obesity (ADVANCE-SURMOUNT-KIDS)
- Loma Linda University School of Medicine, Loma Linda
- Childrens Hospital of Los Angeles, Los Angeles
- UCLA Mattel Children's Hospital, Los Angeles
- and 2 more
RecruitingPhase 3
Ages 6 to 11 · All sexes · Updated Nov 4, 2026 · NCT07817875A Study of Eloralintide (LY3841136) in Participants With Obesity or Overweight, and Type 2 Diabetes
- San Fernando Valley Health Institute, Canoga Park
- AMCR Institute, Escondido
- NorCal Medical Research, Inc, Greenbrae
- and 6 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07282600A Study of Eloralintide (LY3841136) in Participants With Persistent Obesity Who Are Treated With a Weekly Incretin
- Irvine Clinical Research, Irvine
- Scripps Whittier Diabetes Institute, La Jolla
- EndoTrials Center for Clinical Research, La Mesa
- and 5 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07392190Efficacy and Safety of Eloralintide (LY3841136) in Participants With Osteoarthritis Knee Pain and Obesity or Overweight
- Ark Clinical Research - Fountain Valley, Fountain Valley
- Wolverine Clinical Trials, Santa Ana
- Encompass Clinical Research, Spring Valley
- and 1 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07353931Mirikizumab and Tirzepatide Administered in Adult Participants With Moderately to Severely Active Crohn's Disease and Obesity or Overweight
- Smart Cures Clinical Research, Anaheim
- Cedars-Sinai Medical Center, Beverly Hills
- United Medical Doctors - Los Alamitos, Los Alamitos
- and 1 more
RecruitingPhase 3
Ages 18 to 70 · All sexes · Updated Nov 4, 2026 · NCT06937099A Study of Eloralintide (LY3841136) in Participants With Obstructive Sleep Apnea and Obesity or Overweight
- Ark Clinical Research, Long Beach
- Collaborative Neuroscience Research, LLC, Los Alamitos
- Artemis Institute for Clinical Research, Riverside
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07369011Mirikizumab Administered at the Same Time as Tirzepatide in Adult Participants With Moderately to Severely Active Ulcerative Colitis and Obesity or Overweight: Phase 3b Study
- Smart Cures Clinical Research, Anaheim
- Cedars-Sinai Medical Center, Beverly Hills
- United Medical Doctors - Los Alamitos, Los Alamitos
- and 1 more
RecruitingPhase 3
Ages 18 to 70 · All sexes · Updated Nov 4, 2026 · NCT06937086Effects of Dietary Supplements on Muscle Mass and Function While Using GLP-1 Medication
- UCLA Center for Human Nutrition, Los Angeles
RecruitingHealthy volunteers welcome
Ages 18 and older · All sexes · Updated Nov 4, 2026 · NCT07806838A Platform Trial for Pediatric Participants With Obesity or Overweight (LY900040)
- Loma Linda University School of Medicine, Loma Linda
- Childrens Hospital of Los Angeles, Los Angeles
- UCLA Mattel Children's Hospital, Los Angeles
- and 2 more
RecruitingPhase 3
Ages 6 to 17 · All sexes · Updated Nov 4, 2026 · NCT06672549A Study of LY3457263 Compared With Placebo in Participants With Type 2 Diabetes on a Stable Dose of Semaglutide or Tirzepatide
- Wolverine Clinical Trials, Santa Ana
RecruitingPhase 2
Ages 18 to 75 · All sexes · Updated Nov 4, 2026 · NCT06897475A Study of Clazakizumab (LY5724886) in Adults With Elevated hsCRP and at Increased Risk for Cardiovascular Event
- Thrive Clinical Research Group, Glendora
RecruitingPhase 2
Ages 18 and older · All sexes · Updated Nov 3, 2026 · NCT07783802Comparing the Extent to Which Maridebart Cafraglutide is Made Available in the Body of Participants Living With Overweight or Obesity After Switching From Glucagon-like Peptide-1 Receptor Agonists (GLP-1RA)
- Catalina Research Institute LLC (CRI) - Montclair, Montclair
RecruitingPhase 1
Ages 18 to 70 · All sexes · Updated Nov 2, 2026 · NCT07908316A Study to Evaluate Effect of AZD6234 in Adult Participants With Obesity or Overweight With Weight-related Comorbidity Without Type 2 Diabetes Mellitus
- Research Site, Escondido
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Oct 30, 2026 · NCT07784725Maridebart Cafraglutide in Heart Failure With Preserved or Mildly Reduced Ejection Fraction and Obesity
- National Heart Institute, Beverly Hills
- Valley Clinical Trials, LLC dba Flourish Research, Covina
- National Institute of Clinical Research, Huntington Beach
- and 9 more
RecruitingPhase 3
Ages 18 to 99 · All sexes · Updated Oct 29, 2026 · NCT07037459A Study to Evaluate Effect of AZD6234 in Adult Participants With Type 2 Diabetes Mellitus and Obesity or Overweight
- Research Site, Bakersfield
- Research Site, Gardena
- Research Site, Lincoln
- and 2 more
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Oct 28, 2026 · NCT07784270Safety and Efficacy of ABBV-295 in Adults With Obesity or Overweight With Weight-Related Comorbidities
- John Muir Health - Concord /ID# 282469, Concord
- Aurora FDRC Inc. /ID# 282494, Costa Mesa
- NorCal Medical Research /ID# 283117, Greenbrae
- and 7 more
RecruitingPhase 2
Ages 18 to 75 · All sexes · Updated Oct 27, 2026 · NCT07752979Redefining Evaluation of Adiposity and Leanness: Broadening Objective Diagnostics for Obesity
- Exponent Menlo Park, Menlo Park
RecruitingObservational study
Ages 18 and older · All sexes · Updated Oct 26, 2026 · NCT07776678Study to Assess the Effect and Safety of ALV-100 on Maintenance of Weight Loss
- Profound Research, Oceanside
RecruitingPhase 2
Ages 18 to 75 · All sexes · Updated Oct 26, 2026 · NCT07837973A Study of Aleniglipron in Adults With Obesity or Overweight and Type 2 Diabetes Mellitus (ACCOMPLISH-2)
- ACCOMPLISH-2 Research Site, Escondido
- ACCOMPLISH-2 Research Site, Fountain Valley
- ACCOMPLISH-2 Research Site, La Jolla
- and 4 more
RecruitingPhase 3Healthy volunteers welcome
Ages 18 to 79 · All sexes · Updated Oct 20, 2026 · NCT07654374Pharmacotherapy in Conjunction With Lifestyle Counseling for Management of Weight Regain After Bariatric Surgery
- University of California Irvine Medical Center, Orange
RecruitingPhase 4
Ages 18 to 70 · All sexes · Updated Oct 19, 2026 · NCT05975580Evaluation of the Tolerability of Cagrilintide in Participants Not Tolerating GLP-1-RA Therapies Due to Gastrointestinal Adverse Events
- Diablo Clinical Research, Inc., Walnut Creek
RecruitingPhase 1
Ages 18 and older · All sexes · Updated Oct 19, 2026 · NCT07607587A Research Study Investigating How Adults With Overweight or Obesity, With or Without Type 2 Diabetes, Tolerate Switching to a New Treatment (Zenagamtide) From Their Current Tirzepatide Medication
- PAREXEL Glendale/LA EPCU, Glendale
RecruitingPhase 1
Ages 18 and older · All sexes · Updated Oct 16, 2026 · NCT07868354A Research Study Investigating How Adults With Overweight or Obesity, With or Without Type 2 Diabetes, Tolerate Switching to a New Treatment (Zenagamtide) From Their Current Semaglutide Medication
- PAREXEL Glendale/LA EPCU, Glendale
RecruitingPhase 1
Ages 18 and older · All sexes · Updated Oct 16, 2026 · NCT07855133From ClinicalTrials.gov, data retrieved Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.