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CompletedNCT06619067PROBAFLORUpdated Apr 2, 2025

Efficacy Study of the Probiotic Food Supplement PROBAFLOR for Maintaining Intestinal Well-being

An interventional study of PROBAFLOR and Placebo in Gut and Microbiota Balance, sponsored by Synbiotec Srl. Completed at 1 site in Italy. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-04-02.

Sponsored by Synbiotec Srl · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

It is now known that intestinal health has a strong influence on the entire body. Recent research advances have demonstrated the involvement of the intestinal microbiota in the well-being of the intestine. Preventive medicine is increasingly perceived as important in medical and economic terms, particularly in the field of gastroenterology. An innovative approach to support gut health is based on the use of modulators of the intestinal microbiome or gastrointestinal barrier, such as probiotics or prebiotics. The rationale for this study is therefore based on the hypothesis that the combination of 11 probiotic strains, conveyed through the PROBAFLOR food supplement, can play a positive role in maintaining normal intestinal function, bringing benefits to the subject who takes this supplement.

Read the detailed description

This is a randomized, double-blind, placebo-controlled intervention study with a duration of 3 months of intervention + 1 month of follow-up, on biological samples. Eligible participants will be randomized and receive either the probioic or placebo supplement to consume daily for 3 months. Three check-in visits will occur, one at the screening, the second one afetr the 3-months intervention and the final one after 1 month of followup. Participants will be expected to complete a daily study diary documenting their investigational product use/adverse events and a daily bowel habits diary documenting each bowel movement. Stool samples, and questionnaires will be completed for study outcome analysis.

02

Conditions studied

  • Gut
  • Microbiota Balance

Keywords

  • Probiotics
  • Gut health
  • Microbiota
03

In context

Lead sponsor

Synbiotec Srl is the lead sponsor of 2 studies on the registry; none 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

  • men and women aged between 18 and 65;
  • healthy based on medical history;
  • commitment to comply with all firm procedures;
  • commitment to refrain from using any home remedies to control gastrointestinal problems, particularly if live bacteria are involved;
  • signature of informed consent.

Exclusion criteria

Exclusion Criteria:

  • use of probiotics continuously, in the two months prior to enrollment;
  • use of antibiotics in the month before enrollment;
  • chemotherapy treatments;
  • diagnosis of respiratory, hepatic and/or renal failure;
  • Clinically significant diseases of the gastrointestinal tract (examples include, but are not limited to, celiac disease, gluten intolerance/sensitivity, inflammatory bowel disease);
  • Women who are pregnant, breastfeeding or planning to become pregnant during the study;
  • Allergy or sensitivity to the active or inactive ingredients of the investigational product.
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
60 participants (actual)

Study arms

  • Active comparator
    Treated group

    Dietary supplement: PROBAFLOR 20 Billion CFU/dose, serving size = 1 capsule/day

    Dietary Supplement: PROBAFLOR

  • Placebo comparator
    Placebo group

    Placebo Placebo product, serving size = 1 capsule/day

    Other: Placebo

Interventions

  • Dietary supplementPROBAFLOR

    PROBAFLOR is a food supplement made up of 11 bacterial strains and inulin. The bacterial strains present are: Bifidobacterium lactis BLC1, Lactococcus lactis LL82, Lactobacillus plantarum 14D, Lactobacillus acidophilus LA1, Streptococcus thermophilus Z57, Bifidobacterium longum SP54, Lactobacillus rhamnosus SP1, Lactobacillus bulgaricus LB2, Bifidobacterium bifidum SP9,Lactobacillus salivarius SP2, Lactobacillus casei BGP93.

  • OtherPlacebo

    Placebo

06

What researchers measure

Primary outcomes

  1. maintenance and/or improvement of intestinal health and health-related quality of life (through the GIQLI questionnaire)

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

Secondary outcomes

  1. Intestinal microbiota composition

    Metagenomic analysis on faecal samples

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

  2. SCFA determination

    Gas chromatographic analysis of fecal water

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

  3. Changes in quality of life.

    Assessed by PGWBI (The Psychological General Well-Being Index)

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

  4. Changes in intestinal functionality

    Assessed in accordance with the Bristol Stool Form Scale

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

  5. Changes on gastrointestinal symptoms

    Assessed by the GSRS (Gastrointestinal Symptom Rating Scale)

    Time frame: Baseline, After 3 months of intervention, at follow-up (one month after the end of administration

07

Study locations

1 site
  • Scuola di Bioscienze e Medicina Veterinaria, Università di Camerino
    Camerino, Macerata 62032, Italy
08

References and documents

Publications

  • Revicki DA, Wood M, Wiklund I, Crawley J. Reliability and validity of the Gastrointestinal Symptom Rating Scale in patients with gastroesophageal reflux disease. Qual Life Res. 1998 Jan;7(1):75-83. doi: 10.1023/a:1008841022998. PubMed 9481153 ↗
  • Lewis SJ, Heaton KW. Stool form scale as a useful guide to intestinal transit time. Scand J Gastroenterol. 1997 Sep;32(9):920-4. doi: 10.3109/00365529709011203. PubMed 9299672 ↗
  • Eypasch E, Williams JI, Wood-Dauphinee S, Ure BM, Schmulling C, Neugebauer E, Troidl H. Gastrointestinal Quality of Life Index: development, validation and application of a new instrument. Br J Surg. 1995 Feb;82(2):216-22. doi: 10.1002/bjs.1800820229. PubMed 7749697 ↗
  • Sanchez B, Delgado S, Blanco-Miguez A, Lourenco A, Gueimonde M, Margolles A. Probiotics, gut microbiota, and their influence on host health and disease. Mol Nutr Food Res. 2017 Jan;61(1). doi: 10.1002/mnfr.201600240. Epub 2016 Oct 10. PubMed 27500859 ↗
  • Possemiers S, Grootaert C, Vermeiren J, Gross G, Marzorati M, Verstraete W, Van de Wiele T. The intestinal environment in health and disease - recent insights on the potential of intestinal bacteria to influence human health. Curr Pharm Des. 2009;15(18):2051-65. doi: 10.2174/138161209788489159. PubMed 19519443 ↗
  • Mai V, Morris JG Jr. Colonic bacterial flora: changing understandings in the molecular age. J Nutr. 2004 Feb;134(2):459-64. doi: 10.1093/jn/134.2.459. PubMed 14747689 ↗
  • Tuohy KM, Probert HM, Smejkal CW, Gibson GR. Using probiotics and prebiotics to improve gut health. Drug Discov Today. 2003 Aug 1;8(15):692-700. doi: 10.1016/s1359-6446(03)02746-6. PubMed 12927512 ↗
  • Sola KF, Vladimir-Knezevic S, Hrabac P, Mucalo I, Saso L, Verbanac D. The effect of multistrain probiotics on functional constipation in the elderly: a randomized controlled trial. Eur J Clin Nutr. 2022 Dec;76(12):1675-1681. doi: 10.1038/s41430-022-01189-0. Epub 2022 Aug 4. PubMed 35927504 ↗
  • Rizzardini G, Eskesen D, Calder PC, Capetti A, Jespersen L, Clerici M. Evaluation of the immune benefits of two probiotic strains Bifidobacterium animalis ssp. lactis, BB-12(R) and Lactobacillus paracasei ssp. paracasei, L. casei 431(R) in an influenza vaccination model: a randomised, double-blind, placebo-controlled study. Br J Nutr. 2012 Mar;107(6):876-84. doi: 10.1017/S000711451100420X. Epub 2011 Sep 7. PubMed 21899798 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 2, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06619067
Lead sponsor
Synbiotec Srl
Responsible party
Sponsor
First posted
Oct 1, 2024
Start date
Jul 1, 2024
Primary completion
Jan 31, 2025
Completion
Mar 31, 2025
Last update
Apr 2, 2025

Study contacts

Maria Cristina Verdenelli, PhD
study director · Synbiotec Srl

Oversight

Data monitoring committee
Yes
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 Jan 2025. You cannot join it, but the record below documents what was studied.

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