Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

75 clinical studies listed.

Filters:

Constipation

Tundra lists 75 Constipation clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

RECRUITING

NCT07215351

Impact of the Inno Cleanse Dietary Supplement on Gut Health and Associated Variables in Healthy Men and Women

The purpose of the present study is to investigate the impact of a natural dietary supplement, Inno Cleanse™, to reduce bloating in a population of otherwise healthy men and women, who claim to feel frequently bloated. Inno CleanseTM dietary supplement is manufactured in the United States under current Good Manufacturing Practices (cGMP) and is marketed by InnoSupps as a digestive health aid. It is sold in the United States on the company's website, Amazon, and in many large retail outlets. It remains a very popular product, with close to 1.4 million units sold since 2020, with a reported 66,000 units sold in the past three months. Despite the prevalence of dietary supplements identifying as digestive aids, detoxification, and cleanses, very little research has been done to determine their effectiveness. The product appears to be well-designed, with multiple ingredients included which have scientific evidence of effectiveness. That said, and despite the overall positive reviews, there is no known clinical research to support the product's effectiveness. Therefore, the aim of this study is to evaluate the efficacy of the Inno Cleanse product to reduce bloating and result in other positive outcomes (weight loss). This study will be run as a double-blind placebo-controlled trial, in which subjects will use the product or placebo for two weeks. It is hypothesized that treatment with the dietary supplement Inno Cleanse will result in reduced bloating, as evidenced by self-reported reductions in bloating and hunger, as well as moderate weight loss and a reduction in body circumference measures due to the reduced bloating. In addition, multiple anecdotal reports of improved skin health have been noted in those using the product. Additionally, routine blood and urine sample analysis will be performed as a secondary outcome, as a safety measure.

Gender: All

Ages: 18 Years - Any

Updated: 2026-04-02

1 state

Constipation
Bloating
RECRUITING

NCT06810167

Assessing Tenapanor as a Treatment of CF-related Constipation.

Tenapanor is the newest FDA-approved drug for IBS with constipation (IBS-C). This study seeks to understand tenapanor as a treatment for cystic fibrosis-related constipation (CFrC) in CF patients. Participants will ingest one 50 mg tablet of tenapanor, twice daily, for a 4-week treatment period. They will also complete three questionnaires, the PAC-SYM, PAC-QoL, and IBS-SSS, and daily diaries to characterize GI symptom burden and spontaneous bowel movement (SBM) frequency.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2026-03-18

1 state

Cystic Fibrosis
Constipation
ACTIVE NOT RECRUITING

NCT07466914

Constipation in Children With Cerebral Palsy

Constipation is a common problem in children with cerebral palsy and may negatively affect daily activities, quality of life, and family well-being. Several factors such as nutrition, physical activity level, functional status, and psychological condition of the caregiver may be associated with constipation in this population. The aim of this study is to investigate the presence and severity of constipation in children with cerebral palsy and to examine the factors that may be related to constipation, including dietary intake, fluid consumption, physical activity level, functional status, and caregiver psychological status. This study is an observational cross-sectional study including children with cerebral palsy aged 4-18 years and their caregivers. Data will be collected using questionnaires, clinical classification systems, bowel diaries, nutrition records, and psychological scales. No intervention will be applied to participants.

Gender: All

Ages: 4 Years - 18 Years

Updated: 2026-03-16

1 state

Cerebral Palsy
Constipation
Physical Activity
NOT YET RECRUITING

NCT07470892

Preoperative Fish Oil PN and Prognosis After Constipation Surgery

This is a prospective, multicenter, real-world observational study to evaluate the impact of perioperative parenteral nutrition (PN) with fish oil-containing lipid emulsion on outcomes in adult patients with constipation undergoing elective colon surgery. The study will compare two clinical nutrition strategies: (1) PN with fish oil-containing lipid emulsion started before surgery and continued after surgery, and (2) PN with fish oil-containing lipid emulsion started only after surgery. Eligible participants are adults (18-75 years) with slow-transit constipation (STC) or megacolon who are scheduled for elective colon surgery and have nutritional risk (NRS2002 score \>=3). The primary objective is to compare the incidence of postoperative complications between these two PN timing strategies. Secondary objectives include comparison of perioperative nutritional status, postoperative inflammatory status, prognosis, and safety outcomes. This study will collect and analyze clinical data, laboratory indicators, perioperative recovery outcomes, follow-up assessments, and safety information in routine clinical practice. Outcomes include postoperative complication rates, changes in nutritional and inflammatory markers, bowel function recovery, length of hospital stay, constipation-related symptoms, quality of life, and adverse events. No experimental intervention will be assigned as part of this observational study. The planned sample size is 306 participants. The findings may help optimize perioperative nutritional support strategies for patients with constipation undergoing surgery.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2026-03-13

Constipation
Slow Transit Constipation
Megacolon
RECRUITING

NCT07462481

Probiotic Improve Constipation

To evaluate the efficacy and safety of probiotic as a food supplement in regulating bowel habits in patients with chronic constipation, and to compare it with placebo.

Gender: All

Ages: 18 Years - 65 Years

Updated: 2026-03-10

1 state

Constipation
NOT YET RECRUITING

NCT07444008

Randomized, Blinded, Placebo-Controlled Evaluation of BioAmicus Complete

This is a randomized, single-blind, placebo-controlled study to evaluate the efficacy of the dietary supplement BioAmicus Complete (oral drops; a mixture of 10 strains of lacto- and bifidobacteria) in managing functional gastrointestinal disorders and cutaneous symptoms of food allergy in infants during the first months of life. The aim of the study is to assess clinical effects of BioAmicus Complete drops on the symptoms of infantile colic, constipation, diarrhea, gastroesophageal reflux, atopic dermatitis/eczema in full-term newborns during the first months of life. A prospective study comparing two treatment groups: Group 1 (treatment group) - 70 infants. Group 2 (control group) - 70 infants, placebo. The study drug will be taken in 1 time per day within 25 days. Allowed symptomatic therapy includes defoamers (simethicone-based preparations), carminative preparations (dill water (fenhel)), etc.

Gender: All

Ages: 1 Month - 5 Months

Updated: 2026-03-03

Infantile Colics
Constipation
Infantile Diarrhea
+1
RECRUITING

NCT06335797

Optimization of Postoperative Bowel Habits

Project is a trial, in which women undergoing vaginal surgery for pelvic organ prolapse will be randomized 1:1 to a postoperative bowel regimen of either oral senna or rectal bisacodyl suppository.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2026-02-27

1 state

Constipation
ACTIVE NOT RECRUITING

NCT06697626

Validation of a Novel Functional Food Designed to Meet the Nutritional Needs of People Living With Parkinson's Disease

Constipation is a common complication and non-motor symptom of Parkinson's disease (PD) and affects up to 80% of people with PD. It is in fact within the non-motor symptoms that nutrition and dietetic intervention could have the greatest impact. Research suggests that increasing the amount of fibre in the diet could help to alleviate the effects of constipation. Inulin is a type of fibre widely found in a variety of vegetables, and recent studies have shown that inulin can improve constipation in people with PD. With the assistance of a food company, the investigators have developed a functional drink, enriched with chicory inulin and other key nutrients, including B-vitamins and vitamin D (which are suggested within the literature to be beneficial in PD). Therefore, the investigators plan to conduct a 12-week feasibility study to test the effect of this novel functional drink on gut health outcomes, nutritional status, and overall quality of life in people living with PD.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-25

1 state

Constipation
Parkinson Disease
RECRUITING

NCT05603715

Pyridostigmine for the Treatment of Constipation in Parkinson Disease

Constipation is a common and debilitating non-motor symptom of Parkinson disease (PD) that often precedes the onset of classic motor symptoms by decades. There is no standardized algorithm for managing constipation in this patient population, nor are there dedicated treatments. Studies suggest that constipation can affect quality of life to a significant degree, in many cases just as much as motor symptoms. There is an unmet need for effective treatment options for constipation in this patient population. The goal of this study is to determine the efficacy and safety of pyridostigmine as a treatment for chronic constipation in patients with PD.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-23

1 state

Parkinson Disease
Constipation
ACTIVE NOT RECRUITING

NCT05773742

Treatment of Fecal Incontinence and Chronic Constipation With Low-volume Irrigation

The aim of this study is to investigate the efficacy of low-volume irrigation on bowel function among patients with fecal incontinence and/or chronic constipation (of heterogenous origin).

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-19

Constipation
Fecal Incontinence
ACTIVE NOT RECRUITING

NCT07099222

Efficacy of Non-weight Based, Low Dose Dex-Dex Adjuncts in Prolonging Peripheral Nerve Blocks

The goal of this clinical study is to improve upon the standard practice of utilizing nerve blocks to enhance the satisfaction of patients undergoing shoulder, or foot and ankle surgery regarding their quality of pain control, the duration of their nerve blocks, as well as the avoidance of opioid medications and subsequently their undesirable side effects. The researchers hypothesize that dexmedetomidine and dexamethasone (Dex-Dex) will work synergistically as adjuncts in a low, non-weight based formula. This would allow the investigators to improve patient satisfaction by providing them with a superior means of pain control that is longer in duration with a decreased probability of unwanted side effects. The proposed clinical study will be a prospective, randomized control trial.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2026-02-13

1 state

Postoperative Pain
Nausea and Vomiting, Postoperative
Dizziness
+4
NOT YET RECRUITING

NCT07388589

Soluble and Osmotic Fibre (SOLOS) Diet for Constipation

This research aims to study the dual effectiveness of incorporating soluble fibre and osmotic carbohydrates (SOLOS), with or without restricting fructans and GOS, and present novel findings in managing GI symptoms in patients with functional bowel disorders with constipation. These findings may also support researchers and clinicians in shaping new dietary approaches in the management of general constipation symptoms.

Gender: All

Ages: 18 Years - 70 Years

Updated: 2026-02-06

1 state

Constipation
Constipation - Functional
Constipation Chronic Idiopathic
+11
RECRUITING

NCT04623359

Usefulness of High Resolution Manometry in Constipation

Constipation is a frequent symptom that is reported by more than 10% of the general population. In a few case, constipation is resistant to medical standard care, including osmotic and stimulant laxatives. The diagnosis of colonic inertia may be suspected in these patients although diagnostic criteria for colonic inertia may vary from one country to another. In France, the diagnosis of colonic inertia is based on manometric study of the colorectal contractile activity using manometric probe. Using conventional manometric catheters, severe alteration of the colorectal motility is found in a very small subset of patients, who may later benefit from surgery. The recent use of high resolution manometric probe allowed to map more precisely colorectal motility, but whether these new parameters are relevant remains to be assessed. The aim of this study is to assess the diagnostic performance of a new high resolution manometric probe by comparing healthy volunteers to patients suspected of colonic inertia.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-06

Constipation
RECRUITING

NCT07388264

Impact of Weizmannia (Bacillus) Coagulans JBI-YZ6.3 on Gut Health and Fecal Microbiome Changes

This study will evaluate the effects of supplementation with Weizmannia (Bacillus) coagulans JBI-YZ6.3 on gastrointestinal health in healthy, physically active adults. The primary objective is to determine whether daily intake of this probiotic strain improves symptoms of constipation and related gastrointestinal function compared with placebo. Approximately 30 healthy men and women aged 18 to 50 years will be enrolled in a randomized, double-blind, placebo-controlled, crossover trial. Participants will complete two 4-week supplementation periods, one with Weizmannia (Bacillus) coagulans JBI-YZ6.3 and one with placebo, separated by a 4-week washout period. The total duration of participation will be approximately 13 to 14 weeks, including screening and testing visits. Gastrointestinal symptoms will be assessed at baseline and after each supplementation period using validated questionnaires, with particular focus on the constipation domain of the Gastrointestinal Symptom Rating Scale (GSRS). Secondary outcomes will include additional gastrointestinal symptom domains and markers of perceived gut comfort and function. This study is designed to determine whether supplementation with Weizmannia (Bacillus) coagulans JBI-YZ6.3 produces clinically meaningful improvements in gastrointestinal symptoms in physically active adults compared with placebo.

Gender: All

Ages: 18 Years - 50 Years

Updated: 2026-02-05

1 state

Gastrointestinal Symptoms
Constipation
Gut Health
+1
NOT YET RECRUITING

NCT07344532

Effect of Preoperative Abdominal Effleurage on Postoperative Constipation

This randomized controlled study aims to evaluate the effect of preoperative abdominal superficial effleurage training on the development of postoperative constipation in patients undergoing abdominal surgery. Participants will be randomly assigned to an intervention group receiving abdominal superficial effleurage training in addition to routine care or to a control group receiving routine care only. The effleurage technique will be taught preoperatively and performed by patients postoperatively. Postoperative constipation will be assessed on the 10th postoperative day using the Bristol Stool Form Scale. The findings of this study are expected to contribute to non-pharmacological nursing interventions for the prevention of postoperative constipation.

Gender: All

Ages: 18 Years - Any

Updated: 2026-01-27

Constipation
Abdominal Surgery
Postoperative Constipation
ACTIVE NOT RECRUITING

NCT04666155

MOWOOT Device Treatment for Adults With Chronic Constipation

The primary objective is to compare the effectiveness of the experimental Intermittent Colonic Exoperistalsis (ICE) treatment with MOWOOT, with the active control of trans-anal irrigation (TAI) as standard-of-care. The secondary objectives are to further compare the ICE treatment with MOWOOT to the TAI standard-of-care clinically and economically.

Gender: All

Ages: 18 Years - 99 Years

Updated: 2026-01-22

1 state

Constipation - Functional
Constipation-predominant Irritable Bowel Syndrome
Constipation Chronic Idiopathic
+2
ACTIVE NOT RECRUITING

NCT07344571

Investigating the Correlation Between Functional Constipation and Sacroiliac Joint Disorders

Constipation is a common gastrointestinal issue affecting individuals worldwide. Interferential therapy, a form of electrotherapy, has been suggested to have potential benefits in improving gastrointestinal motility and relieving constipation symptoms. Introducing of a new method like electronic cupping therapy with interferential therapy may optimize the therapeutic outcomes by potentially increasing bowel movements and improving overall gastrointestinal function.

Gender: All

Ages: 25 Years - 60 Years

Updated: 2026-01-15

1 state

Constipation
ENROLLING BY INVITATION

NCT07339865

Study of Transition in Real-life Experiences Affecting Micturition and Well-being in Adolescent Years

With this study, we would like to interview 16-25-year-olds who have experienced urinary problems since childhood and who are still experiencing symptoms in young adulthood. The transition from childhood, through puberty, to young adulthood is a time period marked by many psychological ans physiological changes, during which it can be difficult to properly monitor certain symptoms. With this study, we aim to gather opinions and experiences of adolescents and young adults in order to improve urological care for other patients in the future.

Gender: All

Ages: 16 Years - 25 Years

Updated: 2026-01-14

1 state

Lower Urinary Tract Symptoms (LUTS)
Transition Care
Enuresis Nocturnal
+5
NOT YET RECRUITING

NCT07338643

The Auxiliary Effect of Artificial Intelligence in the Detection of Precancerous Lesions in Proximal Colon Cancer

The investigators conducted a multicenter randomized controlled trial to explore the adjuvant effect of artificial intelligence in the detection of precancerous lesions in the proximal colon.This is a prospective, multicenter, single-blind, parallel randomized controlled trial.During the colonoscopy retraction process, the investigators aimed to compare the detection rates of proximal colon adenomas with and without the assistance of an AI(Artificial Intelligence) diagnostic device.

Gender: All

Updated: 2026-01-14

1 state

Abdominal Pain
Black Stools
Constipation
+1
ACTIVE NOT RECRUITING

NCT02877394

Use of a Squatting Assist Device in Patients With Constipation

Constipation is a very common problem. Western style toilets that are nearly universal in the United States require the person to sit on the toilet. However, results from uncontrolled studies suggests that a squatting posture (as prevalent in many foreign countries) may be better at facilitating evacuation compared to a Western style commode. One uncontrolled, unpublished study suggests that a footstool improved bowel symptoms in nearly 98% of 153 constipated participants. Hence, the investigators propose to evaluate the benefits of a footstool on symptoms and anorectal functions in constipated patients. Hypothesis: the regular squatting assist device (7 inches) but not a sham device (2 inches tall) will improve symptoms of constipation.

Gender: FEMALE

Ages: 18 Years - 80 Years

Updated: 2026-01-13

1 state

Constipation
NOT YET RECRUITING

NCT07302542

Oat Milk for Laxation

This study intends to recruit 90-100 constipated participants aged 25-50 years, including an equal number of males and females, from the faculty and logistics staff of Capital Medical University. Participants will be randomly divided into an intervention group (55-60 individuals) and a control group (35-40 individuals). The intervention group will consume 250 mL of Mengniu Daily Fiber Oat Milk daily for 4 weeks, while the control group will not receive oat milk intervention. Both groups will maintain their original lifestyles, including diet, sleep, and exercise, throughout the study period. Baseline surveys, dietary surveys, blood and urine routine tests, blood biochemical indices, and intestinal flora detection will be conducted before and after the intervention. Defecation status will be recorded, and gastrointestinal symptoms will be assessed using a Gastrointestinal Symptom Rating Scale. Statistical analysis will be performed to determine the laxative efficacy of oat milk.

Gender: All

Ages: 18 Years - 60 Years

Updated: 2025-12-24

Constipation
RECRUITING

NCT07275866

Multi-strain Probiotic Effects on Self-Reported Constipation

Constipation is a prevalent gastrointestinal condition. Beyond simple lifestyle measures (e.g. increasing fibre intake, hydration, levels of exercise), medical therapies are available for management. However, a sizeable number of sufferers are dissatisfied with drug treatments (either over-the-counter or prescribed), meaning there is an unmet need for alternative therapeutic strategies. Pre, pro- and synbiotics have emerged as one alternative treatment, and a growing body of evidence now supports their use in a proportion of individuals with mild constipation. However, it is currently not possible to predict which individuals may benefit. A better understanding of an individuals' symptoms and underlying pathophysiology may allow for more targeted treatment. The multistrain live bacterial food product (probiotic) being tested contains billions of live and active bacteria that has been shown to improve symptoms in the irritable bowel syndrome (IBS: which is 'constipation-predominant' in many). Notably, improvements ('completely resolved' or 'some positive difference') in bowel habit satisfaction, abdominal pain, bloating and urgency, as well as on quality of life have been shown after 4 or more weeks of this probiotc. This study aims to have 20 participants with self-reported constipation to assess improvements in constipation symptoms, quality of life and measures of gut function.

Gender: All

Ages: 18 Years - 70 Years

Updated: 2025-12-18

Constipation
Probiotic
Probiotic Intervention
RECRUITING

NCT07091084

A Study of Herbal Supplements in Cancer Survivors With Constipation

The purpose of this study is to find out whether MZRW is an effective treatment for constipation in cancer survivors. The researchers will compare MZRW with placebo, a pill that looks like MZRW and is given in the same way, but contains no medication. The researchers will also study the effect MZRW has on the gut microbiome. The gut microbiome is a diverse community of microorganisms living in the digestive system, essential for digestion and immune function.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-04

2 states

Constipation
Cancer
Functional Constipation
ACTIVE NOT RECRUITING

NCT04961840

A Study to Assess Maternal and Fetal Outcomes After Taking Prucalopride During Pregnancy

This study will collect information on pregnant women diagnosed with constipation from the two large health care insurance claims records. It will include the following groups: * Those who took prucalopride. * Those who took other medicines for constipation. * Those who did not take any prescription medicines for constipation. The main aim of the study is to find out whether the medicine prucalopride, which is used to treat constipation, is safe for use during pregnancy and to look at whether taking prucalopride at certain times during pregnancy is associated to a higher chance of specific health problems for the mother or baby. The study uses two large existing healthcare insurance databases for collecting information. Participants are not enrolled, treated, or required to visit the doctor during this study.

Gender: FEMALE

Ages: 18 Years - 44 Years

Updated: 2025-12-02

1 state

Constipation
Pregnancy