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A Pilot Study Evaluating the Impact of a Prebiotic Soda on Gastrointestinal Symptoms in Users of GLP-1 Agonists

An Open-label, Randomized Controlled Pilot Study Evaluating the Impact of a Prebiotic Soda on Gastrointestinal Symptoms in Users of GLP-1 Agonists

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07744360
Enrollment
80
Registered
2026-08-04
Start date
2026-02-10
Completion date
2026-06-04
Last updated
2026-08-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

GI Symptoms

Keywords

GLP-1 agonist, GI Symptoms, Prebiotic Fiber, Digestive Health Support, Quality of Life

Brief summary

The main objective of this study is to assess the impact of drinking a prebiotic soda on the gastrointestinal (GI) symptoms associated with the use of GLP-1 receptor agonists compared to usual fluid intake.

Detailed description

The primary aim of this study is to evaluate the effects of including a daily prebiotic soda (i.e., OLIPOP) over a 4-week period on gastrointestinal (GI) symptoms in adults who recently initiated GLP-1 receptor agonist (GLP-1 RA). The study design is exploratory in nature and is set up as a real-world at-home, randomized two-arm study. Participants (n=80) will have initiated GLP-1 RA therapy for weight management at least 1 week but no greater than 4 weeks prior to study enrollment and have at least one reported GI symptom at enrollment. Participants will be randomized to either a control group (continuing to drink their usual fluid intake) or a behavioral intervention group (OLIPOP prebiotic soda,1 can (12 fl oz., 6 g dietary fiber)/day, with the option to consume 2 cans (24 fl oz., 12 g dietary fiber)/day, if desired). Secondary outcomes will include evaluating the effects of prebiotic soda consumption on additional markers of digestive health support (i.e., bowel frequency and stool consistency), health-related quality of life, body weight and BMI, habitual dietary intake, appetite, GI symptom rescue medication usage, safety profile (AE/SAE) and participant experience and satisfaction.

Interventions

Participants will be randomized to consume at least one serving (12 fl oz) of prebiotic soda (6 g dietary fiber/serving) per day, with the option to consume up to two servings (24 fl oz., 12 g dietary fiber/day).

Sponsors

Olipop, PBC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Age between 18 - 65 years old * Currently on prescribed GLP-1 Agonist therapy (semaglutide and/or tirzepatide) for weight management for at least 1 week to 1 month AND experiencing at least one GI side effect (i.e., nausea, diarrhea, constipation, dyspepsia, abdominal pain) * Not taking any prescription medications for side effect management * Not taking fiber supplements to manage constipation * Confirmation of planning to be on GLP-1 therapy for at least 3 more months * Open to consuming a carbonated soda beverage * In good general health at the time of screening * Able to read and understand English * Able to read, understand, and provide informed consent * Able to use a personal smartphone device and download Chloe by People Science * Able to receive shipment of the product at an address within the United States (No PO boxes, APO military PO boxes, Hawaii or Alaska addresses) * Able to complete study assessments over the course of up to 13 weeks * No known diagnosis of IBS or IBD

Exclusion criteria

* Do not have a personal smartphone, internet access, or unwilling to download Chloe * Received any investigational therapies or treatments within 30 days prior to randomization. * Have gastrointestinal illnesses * Currently diagnosed with Alcohol Use Disorder and/or Substance Use Disorder * Currently pregnant, planning to become pregnant in the next 4 months, or breastfeeding * Any underlying medical conditions or comorbidities that may confound the assessment of digestive symptoms or the evaluation of the study outcomes * Have a significant illness, disease or condition which, in the opinion of the principal investigator, may impact their ability to participate in the study or impact the study outcomes * Known hypersensitivity or previous allergic reaction to OLIPOP prebiotic soda or any prebiotic beverage * Are unlikely for any reason to be able to comply with the trial or considered unsuited for participation in the study by the Principal Investigator * Current consumer of prebiotic sodas

Design outcomes

Primary

MeasureTime frameDescription
Evaluate the impact of a prebiotic soda on gastrointestinal (GI) symptoms in users of GLP-1 agonistsBaseline, week 1, week 2, and week 4The Gastrointestinal Symptom Rating Scale (GSRS)

Secondary

MeasureTime frameDescription
Evaluate impact of a prebiotic soda on health-related quality of lifeBaseline and week 436-item Short Form Health Survey (SF-36)
Evaluate the impact of a prebiotic soda on stool characteristicsCompleted daily from baseline to week 4Modified Bristol Stool Scale (mBSS)
Evaluate the impact of prebiotic soda on habitual dietary intakeBaseline, week 2, and week 4Food Frequency Questionnaire
Evaluate the impact of a prebiotic soda on appetiteBaseline, week 1, week 2, week 3, and week 4Appetite Survey
Evaluate the impact of a prebiotic soda on body weight and BMIBaseline and week 4Body Weight and Body Mass Index
Evaluate the impact of a prebiotic soda on GI side effect medication useDaily throughout study (baseline to week 4)Assessment on the type, frequency and dose of rescue medications used for GI side effects reported over the study
Evaluate the impact of a prebiotic soda on AEs and SAEs.Weekly throughout study period (Week 1 through Week 4)Assessment of the number, frequency, and severity of adverse events (AEs), serious adverse events (SAEs) and AE withdrawals reported over the product use period.
Evaluate the participant beverage satisfaction and experience of a prebiotic sodaEnd of Study (week 4)Experience/Feedback Survey

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 5, 2026