Clinical trials
Constipation - Functional clinical trials
Below are recruiting constipation - functional clinical trials, each written for real people, not researchers. We’re tracking 155 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07175922Recruiting
A study of gene changes in people with Parkinson's disease
This study looks at how the csgA gene changes over time in people with Parkinson's disease, especially if they have stomach or bowel issues. It aims to help understand how these changes might relate to symptoms.
LeidenAges 18–80 - NCT07168434RecruitingPhase 3
Yeast supplement for irritable bowel syndrome (IBS)
This trial tests if a yeast supplement called Saccharomyces boulardii can help people with irritable bowel syndrome (IBS), except for those with constipation as their main symptom. Participants take the supplement and see if their symptoms improve.
BragaAges 18–65 - NCT06951386Recruiting
Can a daily drink improve heart and metabolic health?
This trial tests whether taking a daily drink containing short-chain fatty acids can improve risk factors for metabolic syndrome, like belly fat, high blood sugar, or high blood pressure. It might help if you are at risk but not yet taking medications for these conditions.
Leuven, Vlaams-BrabantAges 18–65 - NCT07149519Recruiting
Diet and probiotics for endometriosis and IBS
This study tests whether dietary guidance and probiotics can help women with endometriosis and irritable bowel syndrome (IBS). It aims to see if these treatments improve symptoms and quality of life.
Catanduva, São PauloAges 15–50 - NCT07140913RecruitingPhase 3
Testing KarXT for bipolar I mania with mood stabilizers
This study tests whether adding KarXT to lithium, valproate, or lamotrigine helps calm manic episodes in people with bipolar I disorder. It aims to see if the combination is safe and works better than the mood stabilizer alone.
Bentonville, ArkansasAges 18–65 - NCT06961149Recruiting
Comparing light vs dye spray for colon polyp detection
This study compares two methods used during colonoscopy to help find polyps in the colon. It tests whether a special light technique (linked-color imaging) or a dye spray (indigo carmine) works better for spotting adenomas, which are growths that can turn into cancer. If you are at higher risk for colorectal adenomas, this trial may help improve detection.
Jinan, ShandongAges 45–85 - NCT06877078Recruiting
Podcast for constipation before surgery
This study tests if listening to a podcast about preventing constipation before surgery can help people who are having back, shoulder, knee, or hip surgery. If you are scheduled for one of these surgeries, you may be able to take part.
SilkeborgAges 18 years+ - NCT06966869Recruiting
Fentanyl patch absorption in ICU patients
This study looks at how well fentanyl patches work in ICU patients who are not stable. It aims to understand if the patch is absorbed properly in these patients.
Tel Aviv, IsraelAges 18–70 - NCT07103772Enrolling by invitation
Does a food supplement help irritable bowel syndrome?
This study tests a special food-based supplement (called a nutraceutical) to see if it helps relieve symptoms of irritable bowel syndrome (IBS), like diarrhea and constipation. It is only open to UANL employees and their beneficiaries who are not already on medication for their stomach issues.
Monterrey, Nuevo LeónAges 18 years+ - NCT07090005Recruiting
Endoscopic weight loss: comparing EndoZip and Apollo ESG
This study compares two different endoscopic procedures (EndoZip and Apollo ESG) to help obese patients lose weight. Both are done through the mouth without cutting the skin, and the goal is to see which works better and is safer.
Los Angeles, CaliforniaAges 21–65 - NCT07093463Recruiting
Colon-delivered Vitamin B2 for Gut Health
This trial tests whether a special form of vitamin B2 (riboflavin) delivered to the colon can improve gut health in people with mild to moderate bowel complaints. The study compares the effects of this supplement to a standard diet add-on (inulin) and looks at changes in gut bacteria and symptoms.
Berlin, State of BerlinAges 50–70 - NCT07083596Recruiting
Fermented milk drink for constipation relief in Filipino adults
This study tests if a special fermented milk drink can help relieve constipation symptoms like hard or lumpy stools. Researchers want to see if it works for adults who have constipation without a known medical cause.
Manila, ManilaAges 18–59 - NCT07060014RecruitingPhase 1
Testing NALIRIFOX for advanced appendix and small intestine cancer
This trial tests a combination of four chemotherapy drugs (NALIRIFOX) as a first treatment for people with advanced appendix or small intestine cancer. It aims to see if this combination is safe and effective.
Houston, TexasAges 18 years+ - NCT06825260RecruitingPhase 4
PEG3350 vs Senna after urogynecologic surgery
This study compares two common laxatives to see which works better for preventing constipation after surgery for pelvic organ prolapse or stress urinary incontinence. It will help find the best way to keep you comfortable during recovery.
Syracuse, New YorkAges 18 years+ - NCT07042685RecruitingPhase 2
5-FU and Fruquintinib for advanced colorectal cancer
This trial tests a combination of two drugs (5-FU and fruquintinib) in people with advanced colorectal cancer that cannot be removed by surgery or has spread. It is for those who have not had chemotherapy before.
Houston, TexasAges 18 years+ - NCT07039448Recruiting
Acupressure for constipation in adults with mental illness
This trial tests if learning and practicing acupressure on yourself can help relieve constipation in adults who are staying in a psychiatric hospital. You would receive training and practice at home for four weeks.
Tuenmen, New TerritoriesAges 18 years+ - NCT07030803Recruiting
Oxybutynin vs. nerve stimulation for overactive bladder in children
This trial compares two treatments for kids with overactive bladder: oxybutynin medicine and a painless nerve stimulation device. It aims to find which works better for reducing frequent, urgent, or leaky urination and nighttime accidents.
AmiensAges 6–16 - NCT07032961Recruiting
Capsule camera screening for stomach issues
This study is testing a new, less invasive way to screen for stomach problems using a tiny capsule that you swallow. It's for older adults or those at higher risk of stomach cancer who live in Guangzhou.
Guangzhou, GuangdongAges 45 years+ - NCT07024966Recruiting
A study of supplements for oxidative stress in runners
This study tests whether a combination of three natural supplements (pterostilbene, silybin, and nicotinamide riboside) can reduce exercise-related oxidative stress in amateur runners. If it works, these supplements might help protect your body's cells during intense running.
Reus, TarragonaAges 18–50 - NCT05805436RecruitingPhase 4
Laxatives before robotic prostate or kidney surgery
This trial tests whether giving a laxative before certain robotic urologic surgeries improves bowel function after surgery. It may help reduce constipation and related discomfort during recovery.
Iowa City, IowaAges 30–100 - NCT06989203Recruiting
Protein supplement study for body weight
This trial tests how protein supplements affect body weight in people who are either normal weight or overweight. The goal is to see if adding protein helps with weight management.
Hangzhou, ZhejiangAges 20–50 - NCT06989177Recruiting
Can a probiotic help with body weight?
This trial tests whether taking a probiotic (a good bacteria supplement) can help with body weight. It is for healthy adults, and also for overweight or obese people who have certain weight-related health issues.
Hangzhou, ZhejiangAges 20–50 - NCT06687382RecruitingPhase 2
MBK-01 for recurrent diverticulitis
This trial tests MBK-01, capsules made from healthy gut bacteria, to see if they can help people who keep getting diverticulitis. If you've had three or more bouts in the last three years, this study might offer a new treatment option.
Madrid, MadridAges 18–70 - NCT06951698RecruitingPhase 3
Testing KarXT for bipolar I mania
This trial tests a new medicine, KarXT, to see if it can safely treat manic episodes in people with bipolar I disorder. It is for patients who are currently hospitalized for a manic episode that started within the last 3 weeks.
Bentonville, ArkansasAges 18–65
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Common questions
- Are there clinical trials for constipation - functional?
- Yes. Clin2 currently lists 155 recruiting constipation - functional 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 constipation - functional 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 constipation - functional 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.