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Intracolonic FODMAP Infusion in Healthy Volunteers

Key facts

Who runs it
Universitaire Ziekenhuizen KU Leuven
Where
Belgium1 site in 1 countryChoose a country to see its sites
Trial code
Status
Completed
People taking part
15 people enrolled
Started
26 Jun 2023
Ended
13 Dec 2024
Type of study
Interventional, 3 groups
Treatments tested
  • Fermentable Oligo-, Di- Monosaccharides And Polyols (FODMAPs)
Record updated
18 December 2025

Who can take part

Age
18 years to 70 years
Sex
Women and men
Healthy volunteers
Can take part

The registry criteria, word for word

Show all 17 criteriaShow less

Who can take part

  • Subjects should provide written informed consent to participate in the study
  • Women of child-bearing potential agree to apply a highly effective method of birth control during the entire duration of the trial. Highly effective birth control is defined as those which result in a low failure rate (i.e., less than 1% per year) when used constantly and correctly such as implants, injectables, combined oral contraceptive method, or some intrauterine devices (IUDs), sexual abstinence, or vasectomized partner. Women of non-childbearing potential may be included if surgically sterile (tubal ligation or hysterectomy) or postmenopausal with at least 2 years without spontaneous menses
  • Subjects who are capable to understand the study and the questionnaires, and to comply with the study requirements
  • Healthy volunteers should consider themselves healthy and should not be medically examined

Who cannot take part

  • Concomitant Kidney or Liver disease, Biliary obstruction
  • Subject has received an investigational drug or used an investigational medical device within 30 days prior to randomization, or is currently enrolled in an investigational study
  • History of major surgery of the gastrointestinal tract (appendectomy, hemorrhoidectomy, or polypectomy greater than 3 months post-surgery are allowed)
  • Known underlying organic gastrointestinal disease, including intestinal obstruction, ileus, intestinal perforation, severe inflammatory disorder like ulcerative colitis, Crohn's disease or toxic megacolon
  • Diabetes mellitus types 1 and 2
  • Decreased cardiac -or respiratory function
  • History of skin allergies or a history of extreme sensitivity to cosmetics or lotions
  • The use of following drugs 1 month prior to inclusion and during the whole study duration: laxatives, opioids, anti-acids, anticholinergics/antispasmodics, anticonvulsants, antidepressants, diuretics, antihypertensives, antipsychotics, calcium channel blockers, bile acid sequestrants, iron supplements, anticoagulants, HIV protease inhibitors (saquinavir, lopinavir), atorvastatine, negazodone, efavirenz, Sint-janskruid (CYP3A4 inducers)
  • Pregnant or breastfeeding women
  • Use of antibiotics in the past month
  • Fragile skin vulnerable to skin tears
  • Damaged epigastric skin (open wounds, rash, inflammation)
  • Subjects who are unable to remain in a relaxed reclined position for the test duration

This trial has no sites in United States.

It has sites in one country. Choose a country to see its sites.

About the trial

What the trial wants to find out

Irritable bowel syndrome (IBS) is one of the most common chronic diseases of the gut-brain axis. The underlying pathophysiology is multifactorial, poorly understood and differs between the subtypes: constipation-dominant IBS, diarrhea-dominant IBS, mixed IBS, and unspecified IBS. Although it is considered a motility disorder, no uniform motility patterns have been found in IBS patients and no link has yet been found between the motility patterns and the typical complaints such as nausea, fullness, cramps and flatulence. These symptoms are often diagnosed after a meal and research has shown that especially fermentable oligo, di, monosaccharides and polyols (FODMAPs) give rise to symptoms. Many studies have tested the effect of these FODMAPs after oral administration, but little is known about their direct effect on the colon. In this double-blind cross-over study, 15 healthy volunteers are subjected to 3 colonoscopies in which a catheter is placed to measure the pressures in the large intestine and to administer the dissolved FODMAPs. Volunteers will follow a diet low in fiber and FODMAPs 3 days before each study visit. In addition, they will have to record their daily bowel movements during the week of their study visit and fill in 2 short questionnaires on the day of the study visit regarding their gastrointestinal complaints. There will be at least 2 weeks between the 3 study visits to avoid any overlap between the FODMAPs.

The 3 groups in the trial

  • FructoseOther group

    A solution of 10 g fructose in 200 mL of tap water will be infused once over a period of 20min. during 1 of the 3 investigation days.

    Treatment: Fermentable Oligo-, Di- Monosaccharides And Polyols (FODMAPs)

  • FructanOther group

    A solution of 30 g fructan in 200 mL of tap water will be infused once over a period of 20min. during 1 of the 3 investigation days.

    Treatment: Fermentable Oligo-, Di- Monosaccharides And Polyols (FODMAPs)

  • MannitolOther group

    A solution of 10 g mannitol in 200 mL of tap water will be infused once over a period of 20min. during 1 of the 3 investigation days.

    Treatment: Fermentable Oligo-, Di- Monosaccharides And Polyols (FODMAPs)

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
The Effect of Intracolonic Infusion of FODMAPS on Colonic Motility and Symptoms in Healthy Volunteers
Record updated
18 December 2025