Clinical trials
Overweight or Obese clinical trials
Below are recruiting overweight or obese clinical trials, each written for real people, not researchers. We’re tracking 1,472 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03519893Recruiting
Study of blood pressure drug handling after weight-loss surgery
This study looks at how losartan (a blood pressure medicine) moves through the body after gastric bypass or sleeve gastrectomy. It may help doctors better choose and dose blood pressure treatment after weight-loss surgery.
TrondheimAges 18–70 - NCT03532477Recruiting
Venlafaxine medicine study around weight-loss stomach surgery
This study looks at how the antidepressant venlafaxine is absorbed in the body when people undergo gastric bypass or sleeve gastrectomy. It may help doctors understand whether dosing should change after surgery.
TrondheimAges 18–70 - NCT03407079RecruitingPhase 2
Study of sucralose’s effects on digestion of drugs
This study tests whether the sugar substitute sucralose changes how your body absorbs and breaks down certain medicines. You’d take sucralose or a placebo for 4 weeks, visit the clinic, and complete required samples and medicine doses during visits.
Bethesda, MarylandAges 18–60 - NCT03448783Recruiting
Apixaban levels around bariatric surgery
This study checks how the blood-thinner apixaban behaves in your body before and after gastric bypass or sleeve surgery. Results may help doctors choose safer dosing around bariatric surgery.
TrondheimAges 18–70 - NCT03476577Recruiting
Bariatric surgery study measuring how ibuprofen is absorbed
This study looks at how ibuprofen is absorbed by the body around the time of bariatric (weight-loss) surgery. It may help doctors understand how to use pain medicine safely and effectively after surgery.
TrondheimAges 18–70 - NCT03497143Recruiting
Gastric bypass or sleeve surgery and lamotrigine drug levels
This study measures how well lamotrigine (a seizure/mood-stabilizing medicine) is absorbed after planned weight-loss surgery. It may help doctors understand whether medicine doses need adjustment after bypass or sleeve surgery.
TrondheimAges 18–70 - NCT03460327Recruiting
Study of candesartan blood levels around weight-loss surgery
This trial measures how the blood pressure medicine candesartan is absorbed in your body before and after gastric bypass or sleeve gastrectomy. It may help doctors predict the right dosing for people taking this medication after bariatric surgery.
TrondheimAges 18–70 - NCT03449472Recruiting
Study of quetiapine levels after weight-loss stomach surgery
This trial studies how quetiapine (a mental health medicine) is processed in the body after gastric bypass or sleeve gastrectomy. It may help doctors better adjust dosing after weight-loss surgery.
TrondheimAges 18–70 - NCT03476603Recruiting
Bariatric surgery and how irbesartan moves in your body
This study looks at how a blood-pressure medicine (irbesartan) is absorbed and processed in the body before and after bariatric surgery. It may help doctors understand how dosing might need to change after stomach surgery.
TrondheimAges 18–70 - NCT03460366Recruiting
Bariatric surgery and how enalapril moves in the body
This study looks at how the blood-pressure medicine enalapril is absorbed and processed after gastric bypass or sleeve gastrectomy. It may help doctors better predict dosing and effects after weight-loss surgery.
TrondheimAges 18–70 - NCT03476525Recruiting
Study of fluoxetine after bariatric surgery
This study looks at how the antidepressant fluoxetine is absorbed and behaves in the body before and after gastric bypass or sleeve surgery. It may help doctors better predict how well fluoxetine works after weight-loss surgery.
TrondheimAges 18–70 - NCT03476538Recruiting
Study gabapentin levels after stomach bypass or sleeve surgery
This trial measures how the medicine gabapentin moves through your body after gastric bypass or sleeve gastrectomy. It may help doctors better choose doses for people taking gabapentin after weight-loss surgery.
TrondheimAges 18–70 - NCT03497156Recruiting
Tests drug absorption after stomach bypass or sleeve surgery
This study checks how a blood-pressure medicine called lercanidipine is absorbed by the body after gastric bypass or sleeve gastrectomy. You may be able to join if you are preparing for one of these surgeries in Central Norway.
TrondheimAges 18–70 - NCT03476551Recruiting
Gastric bypass or sleeve check for a water-pill response
This study looks at how well hydrochlorothiazide (a “water pill”) works in the body after gastric bypass or sleeve surgery. It may help doctors better predict dosing and effects after these weight-loss operations.
TrondheimAges 18–70 - NCT03449485Recruiting
Blood medicine study around weight-loss stomach surgery
This study looks at how a medicine (chlorprothixene) moves through the body before and after weight-loss surgery like gastric bypass or sleeve gastrectomy. It may help doctors understand the best timing and dosing of this medicine for people having these operations.
TrondheimAges 18–70 - NCT03440177Recruiting
Study medicine absorption after weight-loss stomach surgery
This study looks at how your blood pressure medicine (ramipril) is absorbed and handled by the body after gastric bypass or sleeve gastrectomy. It may help improve how these medicines are used after weight-loss surgery.
TrondheimAges 18–70 - NCT03407833Enrolling by invitation
Study changes in the body after weight, gut, or liver treatment
This study looks at how the body’s insulin-sensitivity (how well your body uses sugar/insulin) and organ function change after certain medical procedures. It may help researchers understand why some people improve after surgery or liver transplant and guide future care.
Nashville, TennesseeAges 18 years+ - NCT03025074Recruiting
Blood sample bank for liver disease research
This study collects blood samples to build a “biobank” (a stored library of samples) for researchers studying liver diseases like hepatitis, fatty liver disease, and liver cancer. It may help future testing and treatments by allowing scientists to study patterns in people with and without liver conditions.
Buffalo, New YorkAges 7 years+ - NCT02939664Enrolling by invitation
Laparoscopic gastric bypass vs banding for weight loss
This trial compares two types of minimally invasive weight-loss surgery: gastric bypass versus a gastric band. It looks at which approach works better and is safer for people who qualify for bariatric surgery and have not succeeded with supervised weight-loss programs.
Majadahonda, MadridAges 18–65 - NCT02829619Recruiting
Eating at Set Times to Help with Weight Loss
This study looks at whether changing when you eat, along with looking at your genes, can help people lose weight. It’s mainly for adults who are above a healthy weight range and don’t have certain health conditions or medicines.
Murcia, MurciaAges 18 years+ - NCT02861781Recruiting
Collecting body tissue samples during bariatric surgery
This study collects small tissue samples during planned weight-loss surgery to better understand metabolism and how insulin works in people with and without type 2 diabetes. You may help researchers by allowing their team to take these samples while you are already having surgery.
MontpellierAges 18–65 - NCT02390765Recruiting
Study of growth, weight, and behavior in children
This study looks at how children’s growth and weight relate to thinking, mood, and behavior. It may help researchers understand what patterns affect health and development so they can guide better support for families.
Bethesda, MarylandAges 8–100 - NCT02646475RecruitingPhase 1
Study angiotensin medicine to improve metabolism in obesity
This Phase 1 study tests how a medication that affects the body’s angiotensin system (angiotensin-(1-7)) changes metabolism in adults with obesity, insulin resistance, and high blood pressure. It may help researchers understand whether this approach can improve blood sugar/insulin function and related body changes.
Nashville, TennesseeAges 18–60 - NCT02669797Enrolling by invitation
Family-based program to help families eat dinner together
This study offers an intervention focused on family dinners to help children improve their eating habits. It targets children who eat family dinners rarely and have a higher weight range, to see if the program can help improve health over time.
Aurora, ColoradoAges 5–10
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Common questions
- Are there clinical trials for overweight or obese?
- Yes. Clin2 currently lists 1,472 recruiting overweight or obese 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 overweight or obese 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 overweight or obese 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.