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7,114 recruiting studies with US sites, from the official ClinicalTrials.gov registry (refreshed Oct 28, 2026). No sign-up needed.
Most recently updated studies · page 29 of 297
- RecruitingHealthy volunteersPhase 1/Phase 2
Peppermint Oil for the Treatment of Interstitial Cystitis / Bladder Pain Syndrome
University of Louisville
- Location
- Louisville, KY
- Eligibility basics
- Ages 18–65 · Women only
- RecruitingHealthy volunteersPhase 1/Phase 2
Hyperpolarized Xenon-129 MR Imaging of the Lung
University of Virginia
- Location
- Charlottesville, VA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1/Phase 2
Comparison of the Short-Term Effect of Dietary Carbohydrate Restriction Versus Exogenous Ketone Supplementation on Myocardial Glucose Suppression and Timing to Achieve a State of Ketosis Using FDG PET/CT Serial Imaging
University of Pennsylvania
- Location
- Philadelphia, PA
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 1
Treating Primary Sclerosing Cholangitis and Biliary Atresia With Vancomycin
Sacramento Pediatric Gastroenterology
- Location
- Sacramento, CA
- Eligibility basics
- Ages 0 mo–40
- RecruitingHealthy volunteersPhase 3
BEATRIX: A Study to Learn About a Group B Streptococcus Vaccine in Healthy Pregnant Women and Their Babies
Pfizer
- Location
- Birmingham, AL + 109 other US sites
- Eligibility basics
- Ages 0 mo–49
- RecruitingHealthy volunteers
UNITY DX Cornea Study
Alcon Research
- Location
- Salt Lake City, UT
- Eligibility basics
- Ages 22+
- RecruitingHealthy volunteersPhase 4
A Study to Investigate the Immunogenicity and Safety of mRNA COVID-19 Variant-containing Formulations
ModernaTX, Inc.
- Location
- Overland Park, KS + 4 other US sites
- Eligibility basics
- Ages 12+
- RecruitingHealthy volunteers
Autologous Hair Follicle Derived Secretome as Adjunct to Aesthetic Procedures
Acorn Biolabs Inc.
- Location
- Fresno, CA + 16 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteersPhase 3
A Study to Learn About the Safety of an Expanded Pneumococcal Vaccine in Healthy Infants
Pfizer
- Location
- Estero, FL + 24 other US sites
- Eligibility basics
- Ages 1 mo–4 mo
- RecruitingHealthy volunteersPhase 3
Study to Learn About Safety, Tolerability, and Immune Response of a Catch-up Pneumococcal Vaccine in Children and Adolescents
Pfizer
- Location
- Birmingham, AL + 58 other US sites
- Eligibility basics
- Ages 1–17
- RecruitingHealthy volunteers
The Impact of Overnight Active Temperature Regulation on the Gut Microbiome, Inflammation, and Circadian Rhythm.
Eight Sleep Inc.
- Location
- Newton Center, MA
- Eligibility basics
- Ages 45+
- RecruitingHealthy volunteers
A Clinical Trial to Evaluate the Effects of Adrenal Adapt on Sleep Quality, Daytime Energy, Stress Resilience, and Cognitive Performance.
Bioligent
- Location
- Las Vegas, NV
- Eligibility basics
- Ages 18–60
- RecruitingHealthy volunteers
A Clinical Trial to Evaluate the Effects of a Children's Daily Multivitamin on Perceived Growth, Immune Health, Energy, and Focus in Children
Hiya Health
- Location
- Las Vegas, NV
- Eligibility basics
- Ages 3–12
- RecruitingHealthy volunteers
Reduction of Adverse Drug Events and Readmissions
ClinLogic LLC
- Location
- York, PA
- Eligibility basics
- Ages 25+
- RecruitingHealthy volunteers
Prospective Multi-Center Trial for FemBloc Permanent Birth Control
Femasys Inc.
- Location
- Chandler, AZ + 11 other US sites
- Eligibility basics
- Ages 21–50 · Women only
- RecruitingHealthy volunteers
DESCANSO, a Mental Health Intervention for Depression, Insomnia, and Fatigue Symptoms in Latino People With Cancer
Ponce Medical School Foundation, Inc.
- Location
- Basking Ridge, NJ + 6 other US sites
- Eligibility basics
- Ages 21–100
- RecruitingHealthy volunteers
A Study to Determine the Effect of Access to Multiple Tobacco Flavor Options on Smoking Abstinence Among Primary Cigarette Smokers Using an Electronic Nicotine Delivery System
RAI Services Company
- Location
- Fort Lauderdale, FL + 4 other US sites
- Eligibility basics
- Ages 21–65
- RecruitingHealthy volunteers
Extensively Hydrolyzed Formula Growth Monitioring Study (GMS)
Mead Johnson Nutrition
- Location
- Birmingham, AL + 9 other US sites
- Eligibility basics
- Ages 0 mo–0 mo
- RecruitingHealthy volunteersPhase 3
A Study to Learn About How a New Pneumococcal Vaccine Works in Infants.
Pfizer
- Location
- Birmingham, AL + 101 other US sites
- Eligibility basics
- Ages 1 mo–7 mo
- RecruitingHealthy volunteersPhase 3
A Study of Aleniglipron in Adults With Obesity or Overweight and Type 2 Diabetes Mellitus (ACCOMPLISH-2)
Gasherbrum Bio, Inc., a wholly owned subsidiary of Structure Therapeutics
- Location
- Birmingham, AL + 55 other US sites
- Eligibility basics
- Ages 18–79
- RecruitingHealthy volunteers
IgG Binding Protein LT in Support of a Healthy Gut on the Go
Bactolife A/S
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–70
- RecruitingHealthy volunteers
Galleri® in the Medicare Population.
GRAIL, Inc.
- Location
- Fort Smith, AR + 70 other US sites
- Eligibility basics
- Ages 50+
- RecruitingHealthy volunteersPhase 3
A Study to Evaluate the Efficacy and Safety of CBL-514 Injection for Reducing Subcutaneous Fat
Caliway Biopharmaceuticals Co., Ltd.
- Location
- Encinitas, CA + 5 other US sites
- Eligibility basics
- Ages 18+
- RecruitingHealthy volunteers
Nellcor™ Investigational Device Sitting-Walking Study
Medtronic - MITG
- Location
- Denver, CO
- Eligibility basics
- Ages 18–75
Data source: daily sync of the ClinicalTrials.gov API. How we list studies