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CompletedNCT06404853MANNAPEDUpdated May 8, 2024

Effect and Safety of the Dietary Supplement Mannite in Pediatric Patients With Chronic Functional Constipation

An interventional study of Manna in Constipation - Functional, sponsored by Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo di Alessandria. Completed at 1 site in Italy. Open to participants aged 6 Months to 16 Years. Per ClinicalTrials.gov, last updated 2024-05-08.

Sponsored by Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo di Alessandria · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 11 months after the study started (first participant enrolled Mar 2021, registered Feb 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
110
Allocation
Not applicable
Ages
6 Months to 16 Years
Sex
All
01

Study summary

Functional constipation is a widely prevalent pediatric issue, with a prevalence in some studies as high as 32.2%.

Treatment consists of a combination of behavioral and pharmacological interventions (mainly, administration of polyethylene glycol laxatives or the use of enemas).

Glucomannan (GNN) is a polysaccharide of 1,4-D-glucose and D-mannose found in the soluble fiber of some plants. While studies available in the literature to date agree that mannite is a dietary supplement with safe use, the usefulness of this compound remains controversial.

Read the detailed description

Functional constipation is a widely prevalent pediatric issue, with a prevalence in some studies as high as 32.2%. Characterized by annoying and embarrassing symptoms such as reduced number of evacuations, increased stool consistency, fecal incontinence, and abdominal pain functional constipation has a negative impact on the quality of life of affected children and their families. It is a frequent reason for referral to the general pediatrician and pediatric gastroenterologist and significantly impacts health care spending The guidelines publicized by the European Society for Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN) and the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) on functional constipation in children provide the most up-to-date evidence-based recommendations for the evaluation, treatment and follow-up of children with this condition. Key indications include a diagnosis based on history and physical examination and a definition of functional constipation based on the criteria of Rome.

Treatment consists of a combination of behavioral and pharmacological interventions (mainly, administration of polyethylene glycol laxatives or the use of enemas).

Glucomannan (GNN) is a polysaccharide of 1,4-D-glucose and D-mannose found in the soluble fiber of some plants. While studies available in the literature to date agree that mannite is a dietary supplement with safe use, the usefulness of this compound remains controversial.

The study aims to evaluate the effect of Mannite supplement (composed of 90% Mannite from Fructose and 10% Manna from Ash) as a unique therapy in the treatment of functional constipation.

02

Conditions studied

  • Constipation - Functional

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Keywords

  • constipation
03

In context

Constipation

1,041 studies on the registry are indexed under Constipation; 139 are open to participants now.

This study's enrollment of 110 is above the median of 78 across 867 interventional studies indexed under Constipation.

Browse Constipation studies →

Lead sponsor

Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo di Alessandria is the lead sponsor of 37 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
6 Months to 16 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Diagnosis of functional constipation defined according to Rome IV criteria.
  • Age between 6 months and 16 years.
  • Informed consent signed by parent/legal guardian

Exclusion criteria

Exclusion Criteria:

  • Presence of organic causes of bowel disorders (Hirschsprung's disease, spinal abnormalities or anorectal pathology; history of gastro-intestinal surgery), celiac disease
  • Mental retardation
  • Irritable bowel syndrome
  • Taking medications that affect gastro-intestinal motility in the previous 4 weeks
  • Clinical suggestive of metabolic disease (e.g., hypothyroidism)
  • Known hypersensitivity to manna, mannitol, or other ingredient in the dietary supplement mannite
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
110 participants (actual)

Study arms

  • Other
    Supplement dietary manna

    Administration of supplement dietary manna

    Dietary Supplement: Manna

Interventions

  • Dietary supplementManna

    Administration is by the oral route according to weight at a dosage of 1 g/kg/day, dissolved in a glass of water, up to a maximum of 30 g. Administration should be repeated every 24 h for 8 weeks, accompanied by plenty of hydration. In case an effective dosage is achieved (evacuation within 72 h) it will be maintained until the end of the study. If evacuation has not occurred after 72 h, evacuative enema and increased dosage to 1.5 g/kg/day will be indicated. If further evacuative enema is needed, product administration will be discontinued and classical polyethylene glycol therapy will be started as per guidelines.

06

What researchers measure

Primary outcomes

  1. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Spontaneous bowel movements more than twice per week.

    Time frame: At 8 weeks

  2. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Absence of soiling episodes.

    Time frame: At 8 weeks

  3. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Number of painful evacuations or evacuations with hard stools per week.

    Time frame: At 8 weeks

  4. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Number of episodes of abdominal pain per week.

    Time frame: At 8 weeks

  5. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Need for evacuative enema treatment due to lack of evacuation for three consecutive days.

    Time frame: At 8 weeks

  6. Outcome of therapeutic effect

    The therapeutic outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoint: · Number of flatulence episodes within a week.

    Time frame: At 8 weeks

Secondary outcomes

  1. Outcome of safety

    The safety outcome assessment of the mannitol-based dietary supplement in the treatment of pediatric constipation will be evaluated through the following endpoints: * Absence of gastrointestinal-related adverse events during the study period. * Other adverse events (mild or severe) reported by parents during the study period, including pain, infections, or any other events related to the intervention

    Time frame: At 8 weeks

  2. Questionnaire Pediatric Quality of Life Inventory Gastrointestinal Symptoms Module

    The questionnaire PedsQL Gastrointestinal Symptoms Module has a scale that typically ranges from 0 to 100: higher scores indicate a better outcome, representing fewer symptoms and higher health-related quality of life.

    Time frame: Every week for 8 weeks

  3. Number of Bowel Movements

    Number of bowel movements, recorded daily

    Time frame: Daily for 8 weeks

  4. Stool Consistency

    Daily dairy of stool consistency, assessed using the Bristol Stool Scale, which categorizes stool types from 1 "very costipated" to 7 "Inflammation and Diarrhea".

    Time frame: Daily for 8 weeks

  5. Involuntary Fecal Loss

    Daily dairy of involuntary fecal loss with Yes/No indicator.

    Time frame: Daily for 8 weeks

  6. Additional Symptoms

    Daily dairy of additional symptoms such as bloating (sensation of a swollen belly), abdominal pain, discomfort (general abdominal disturbance), and straining during defecation

    Time frame: Daily for 8 weeks

07

Study locations

1 site
  • SC Pediatria
    Alessandria, Piedmont 15121, Italy
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Mar 2021 to primary completion in Mar 2022, 12 months.

Of 229 non-industry interventional studies with no phase under Constipation, half reached primary completion within 16 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 35. This study's 12 months is below that.

Counting every sponsor, half of 296 studies reached it within 14 months; a quarter within 7 and three quarters within 28.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 29, 2024
First posted
May 8, 2024
StartActual
Mar 16, 2021
Primary completionActual
Mar 16, 2022
CompletionActual
Dec 31, 2023
Last update
May 8, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 8, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT06404853
Lead sponsor
Azienda Ospedaliera SS. Antonio e Biagio e Cesare Arrigo di Alessandria
Collaborators
Iuppa Industriale S.r.l.
Responsible party
Sponsor
First posted
May 8, 2024
Start date
Mar 16, 2021
Primary completion
Mar 16, 2022
Completion
Dec 31, 2023
Last update
May 8, 2024

Study contacts

Enrico Felici
principal investigator · Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in May 2024. You cannot join it, but the record below documents what was studied.

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