About this trial
A two-arm, double-blind, randomized, placebo-controlled study investigating the efficacy of a probiotic preparation developed as supportive supplementation of probiotics in patients with reflux.
The objective of this trial is to evaluate the effect of the probiotic dietary supplement on the diversity and composition of the gut microbiome in patients diagnosed with GERD who are on PPI therapy. The study will also monitor changes in the oral microbiome and the impact of probiotic supplementation on patient quality of life and GERD symptoms.
Patients will take the probiotic preparation, 2 tablets twice daily (morning before meals and evening after meals). The experimental phase will last 6 weeks. Patients in the control arm will receive placebo. Supplementation will be discontinued if adverse effects occur.
Oral and rectal swabs will be taken before and after administration of the preparation. Patients will monitor their symptoms using a questionnaire.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Diagnosed GERD.
Stable health without current complications.
Patients on stable pharmacological PPI therapy (rabeprazole).
Disqualifiers
Use of probiotics or prebiotics within the last 4 weeks.
Pregnancy or breastfeeding.
Systemic antimicrobial therapy within the last 4 weeks.
Infectious disease of the respiratory or gastrointestinal tract within the last 2 weeks.
Trial design
Parallel
Treatments tested in this trial
A probiotic dietary supplement
Dietary supplementA probiotic dietary supplement containing a blend of probiotic bacteria from the Lactobacillaceae family, and the genera Streptococcus and Bifidobacterium, selected based on the latest knowledge concerning the use of probiotics in relation to GERD.
Placebo
Dietary supplementplacebo with the same appearance as the probiotic supplement
Treatment groups
Trial outcomes
Primary outcomes
Change of % of patients with dysbiosis in the gastrointestinal tract caused by the disease itself and/or pharmacotherapy - as assessed by using whole-genome sequencing
Secondary outcomes
Change of GERD symptoms assessed by standardized questionnaires - using symptom scores calculated from the data in the questionnaires
Evaluation of safety and tolerability of the preparation - prevalence of patient-reported adverse events as recorded in questionnaires
Sponsors and contacts
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University Hospital Olomouc
Lead sponsor
Masaryk University
Collaborator