Clinical trials
Constipation - Functional clinical trials
Below are recruiting constipation - functional clinical trials, each written for real people, not researchers. We’re tracking 157 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - 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 - 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 - 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 - 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+ - 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+ - 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 - 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 - 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 - 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 - NCT07252427Recruiting
Gut bacteria in IBD with or without depression
This study looks at how the bacteria in your gut (gut microbiome) may differ between people with IBD who also have depression and those who don't. It aims to help understand the link between gut health and mood.
Jinan, ShandongAges 18 years+ - NCT07285707Recruiting
Acupuncture and herbs for long COVID
This small study tests whether acupuncture and Chinese herbal medicine can help relieve common long COVID symptoms like fatigue, cough, brain fog, and pain. It might be a good fit if you are struggling with ongoing symptoms after COVID and are looking for a treatment approach that isn't just more medication.
Whittier, CaliforniaAges 18 years+ - NCT07310264RecruitingPhase 1
Safety study of a new drug for Parkinson's disease
This trial tests a new drug called VT-5006 to see if it is safe for people with Parkinson's disease. It focuses on those who have stomach or bowel issues, like constipation.
LeidenAges 18–80 - NCT07372326Recruiting
Electronic moxibustion for constipation after stroke
This trial tests if a type of heat therapy called electronic moxibustion, timed according to traditional Chinese medicine principles, can help relieve constipation in people who have had a stroke.
Jinhua, ZhejiangAges 30–80 - NCT07375147Recruiting
Comparing two ways to fix a rectocele through the anus or vagina
This trial tests if fixing an anterior rectocele through the anus works just as well as through the vagina. It’s for women who have trouble with bowel movements because of a rectocele that is at least 3 cm and hasn’t gotten better with changes in diet or lifestyle.
Cairo, Al-Manial, Cairo, EgyptAges 18 years+ - NCT07397624Recruiting
Stomach stitching for weight loss in endometrial cancer patients
This study tests a new weight-loss procedure called Endoscopic Suture Gastroplasty (ESG) for women with endometrial (uterine) cancer who are obese. The procedure uses a special camera and stitches to make the stomach smaller, helping you lose weight before your cancer surgery.
Aviano, PordenoneAges 21–75 - NCT00389142Recruiting
Find genes linked to bladder pain and urinary symptoms
This study looks for genetic (inherited) causes of bladder pain syndrome (IC/BPS), using information from people who have typical urinary symptoms. It may help doctors understand why IC/BPS happens, which could guide better future care.
Boston, MassachusettsAges 1 year+ - NCT02390973Recruiting
Bariatric-style surgery vs best diabetes care for long remission
This trial compares surgery plus follow-up care versus the best non-surgical (medical) treatment to help people keep type 2 diabetes in remission for a long time. It may be an option if you have higher body weight and diabetes that’s not well controlled, but safety checks are strict.
Québec, QuebecAges 18–60 - NCT07435740Recruiting
Online sleep coaching for parents of autistic children
This study tests a telehealth program where parents learn techniques to help their young child with autism fall asleep and stay asleep. The goal is to improve the child's sleep without needing medication.
Atlanta, GeorgiaAges 3–7 - NCT07444008Recruiting
BioAmicus Complete for infant digestive and skin issues
This study tests if BioAmicus Complete, a probiotic blend, can help babies with colic, reflux, diarrhea or constipation, and food allergy-related skin problems. Eligible babies are 1 to 4.5 months old, breastfed or formula-fed, and whose parents speak Russian.
Saint PetersburgAges 1 month–5 months - NCT07450443RecruitingPhase 2/Phase 3
Gut health and autism: a study on the gut barrier and bacteria
This trial is looking at the connection between the gut and autism. It tests whether certain gut bacteria and the gut's protective barrier are different in children with autism and gastrointestinal issues. This could help find new ways to improve symptoms.
Milan, MIAges 3–8 - NCT07450547RecruitingPhase 2
A trial of a new medicine for cystic fibrosis and pancreatic problems
This trial tests a new medicine (ANG003) for people with cystic fibrosis who have severe pancreatic problems. It looks at how safe and effective the medicine is, and whether it helps with digestion.
Long Beach, CaliforniaAges 12 years+
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Common questions
- Are there clinical trials for constipation - functional?
- Yes. Clin2 currently lists 157 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.