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CompletedNCT05142137Updated May 15, 2025

Novel Alpha Glucan GI Tolerability Study (Loris Chronic)

An interventional study of Drinkable solution in Healthy Volunteers, sponsored by Société des Produits Nestlé (SPN). Completed at 1 site in Switzerland. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-05-15.

Sponsored by Société des Produits Nestlé (SPN) · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

This study aims to evaluate the gastrointestinal tolerance of chronic consumption (7 days) of a novel alpha glucan compared to a rapidly available carbohydrate (glucose syrup).

Read the detailed description

This study will be randomized, double blind, placebo-controlled, single-center, and 3x3 crossover in design.

Eligible participants will be randomized to receive the below products in single dose and in different random sequence, as determined by the randomization system:

  1. novel alpha glucan (80 g/day)
  2. novel alpha glucan (180 g/day)
  3. glucose syrup (180 g/day)
02

Conditions studied

  • Healthy Volunteers
03

In context

Lead sponsor

Société des Produits Nestlé (SPN) is the lead sponsor of 314 studies on the registry; 16 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Male or female participant,
  2. Healthy status (based on anamnesis),
  3. Age between 18 and 65 years,
  4. Body mass index (BMI) between 18.5 and 29.9 kg/m2,
  5. Able to understand and sign informed consent form,
  6. Having a smartphone with Android or iOS version compatible with Patient Cloud application

Exclusion criteria

Exclusion Criteria:

  1. Fasting plasma glucose higher or equal to 6,1 mmol /L at screening,
  2. Type I and type 2 diabetes,
  3. Pregnant or lactating women,
  4. Known food allergy or intolerance to test products,
  5. Treatment with anorectic drugs, glucose-lowering drugs, steroids, medications known to affect glucose metabolism and/or gastric motility, or any condition known to affect gastro-intestinal integrity and food absorption,
  6. Colonoscopy, irrigoscopy or other bowel cleansing procedures four weeks prior the test,
  7. Any concomitant medication potentially interfering with study procedures and assessment: such as antibiotics, antiacids, or other medications impacting transit time,
  8. Major medical/surgical event in the last 3 months potentially interfering with study procedures and assessments,
  9. Abnormal bowel transit, history of a gastrointestinal disorder (e.g., inflammatory bowel disease, diverticular diseases, colon cancer), or history of chronic constipation with passage of fewer than 3 spontaneous bowel movements per week on average or chronic or recurrent diarrhea with spontaneous bowel movements more often than 3 times daily,
  10. Recent episode of an acute gastrointestinal illness,
  11. Habitual consumption of more than four servings per day of high-fiber foods or extreme dietary habits (e.g. very low carbohydrate diet),
  12. Ongoing or recent weight loss interventions (e.g. dietary weight loss programs),
  13. Alcohol intake higher than 2 servings per day. A serving is 0.4 dl of strong alcohols, 1 dl of red or white wine, or 3 dl of beer,
  14. Score of "severe" symptom for any of the symptoms included in the gastrointestinal symptom questionnaire,
  15. Volunteer who cannot be expected to comply with the protocol,
  16. Family or hierarchical relationships with Clinical Innovation Lab team.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Investigator)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    Novel alpha glucan_dose1

    Total of 180 g of the novel alpha glucan per day, consumed in 4 individual doses (i.e. 4x45 g, with each dose dissolved in 300 ml of water)

    Dietary Supplement: Drinkable solution

  • Experimental
    Novel alpha glucan_dose2

    Total of 80 g of the novel alpha glucan + 100 g glucose syrup per day, consumed in 4 individual doses (i.e. 4x45 g, with each dose dissolved in 300 ml of water)

    Dietary Supplement: Drinkable solution

  • Active comparator
    glucose syrup

    Total of 180 g glucose syrup per day, consumed in 4 individual doses (i.e. 4x45 g, with each dose dissolved in 300 ml of water).

    Dietary Supplement: Drinkable solution

Interventions

  • Dietary supplementDrinkable solution

    The volunteers will consume 300 ml of liquid solution containing the novel alpha glucan or glucose syrup

06

What researchers measure

Primary outcomes

  1. Gastrointestinal Symptom Rating Scale (GSRS)

    Validated questionnaire exploring the presence and severity of GI symptoms over the previous 7 days. The GSRS is a disease-specific instrument of 15 items combined into five symptom clusters depicting reflux, abdominal pain, indigestion, diarrhea and constipation. The GSRS has a seven-point graded Likert-type scale where 1 represents absence of troublesome symptoms and 7 represents very troublesome symptoms. The effect of the interventions on the GSRS will be assessed by a linear mixed model and will take into account information on this from all 7 days of treatment.

    Time frame: Throughout 7 days of treatment

Secondary outcomes

  1. Stool consistency

    The Bristol stool scale is a diagnostic medical tool designed to classify the form of human faeces into seven categories. Types 1 and 2 indicate constipation, with 3 and 4 being the ideal stools, whereas 5 indicate lack of dietary fiber, and 6 and 7 indicate diarrhoea. The effect of the interventions on stool consistency will be assessed by a linear mixed model and will take into account information on this from all 7 days of treatment.

    Time frame: Throughout 7 days of treatment

  2. Stool frequency

    The participants report the number of defecations they have per day, throughout the 7 days study period. There is a large variability in this, but typically 1-3 defecations per day is considered normal, whereas more indicate a runny stool, and fewer a tendency for constipation. The effect of the interventions on stool frequency will be assessed by changes in stool frequency over time, taking all information on this from all 7 days of treatment into account.

    Time frame: Throughout 7 days of treatment

07

Study locations

1 site
  • Clinical Innovation Lab
    Lausanne, Vaud 1000 Lausanne 26, Switzerland
08

References and documents

Publications

  • Kelly RM, Dijkhuizen L, Leemhuis H. Starch and alpha-glucan acting enzymes, modulating their properties by directed evolution. J Biotechnol. 2009 Mar 25;140(3-4):184-93. doi: 10.1016/j.jbiotec.2009.01.020. Epub 2009 Feb 7. PubMed 19428713 ↗
  • Synytsya A, Novak M. Structural analysis of glucans. Ann Transl Med. 2014 Feb;2(2):17. doi: 10.3978/j.issn.2305-5839.2014.02.07. PubMed 25332993 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 15, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05142137
Lead sponsor
Société des Produits Nestlé (SPN)
Responsible party
Sponsor
First posted
Dec 2, 2021
Start date
Aug 16, 2021
Primary completion
Oct 11, 2021
Completion
Oct 31, 2021
Last update
May 15, 2025

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 Nov 2021. You cannot join it, but the record below documents what was studied.

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