Effects of Inulin on Cardiometabolic Risk Factors in Individuals Using Glucagon-like Peptide-1 Receptor Agonists (GLP-1 RA ) Medications for Weight Loss

June 1, 2026 updated by: An Pan, Huazhong University of Science and Technology

The Effect of Inulin on Cardiometabolic Risk Factors in Individuals Using Glucagon-like Peptide-1 Receptor Agonists (GLP-1 RA) Medications for Weight Loss: a Randomized Double-blind Controlled Trial

The goal of this double-blind randomized placebo-controlled supplement study is to investigate if the supplement of inulin (prebiotics, 10 grams per day) has beneficial effects on cardiometabolic risk factors in overweight or obese individuals receiving glucagon-like peptide-1 receptor agonists (GLP-1 RA) medications for weight loss.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

The goal of this double-blind randomized placebo-controlled supplement study is to investigate if the supplement of inulin (prebiotics, 10 grams per day) has beneficial effects on cardiometabolic risk factors in overweight or obese individuals receiving glucagon-like peptide-1 receptor agonists (GLP-1 RA) medications. Approximately 600 overweight or obese individuals using GLP-1 RA medications for weight loss will be enrolled. All participants will provide informed consent before randomization. Eligible individuals must be obese or be overweight with at least one body weight-related complications, and have been using GLP-1 RA medications at the time of enrollment for at least 3 months and plan to continue using them in the next 6 months. Eligible participants will be randomly assigned to inulin intervention or placebo group. Randomization will be computed within study center, age and sex groups. The intervention will last for 4 months. Questionnaire data and bio-samples will be collected before the start of intervention and at the end of the intervention. The primary outcomes are lipid levels measured in bio-samples. Data on secondary outcomes will be obtained through biomarker measurement and questionnaires.

Study Type

Interventional

Enrollment (Estimated)

600

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

  • China
    • Hubei
      • Enshi, Hubei, China
        • The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture
      • Shiyan, Hubei, China
        • Sinopharm Dongfeng General Hospital
      • Wuhan, Hubei, China
        • Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
      • Wuhan, Hubei, China
      • Xiangyang, Hubei, China
        • Xiangyang No.1 People's hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion criteria:

  • Be overweight or obese (meeting any of the following criteria):

    1. Obesity: BMI >=28 kg/m²;
    2. Overweight (BMI >= 24 kg/m²) with at least one body weight-related comorbidity: obstructive sleep apnea syndrome, prediabetes, type 2 diabetes mellitus, hypertension, dyslipidemia, polycystic ovary syndrome, or non-alcoholic fatty liver disease.
  • Must have received GLP-1 RA drugs (Semaglutide, Liraglutide, Benaglutide, Tirzepatide, or Mazdutide) for weight-loss intervention for at least 3 months, and plan to continue using them for the next six months.
  • Age 18-64 years.
  • Consent to participate and sign the informed consent form.

Exclusion criteria:

  • Currently using non-GLP-1 RA medications for weight-loss, or have undergone or plan to undergo weight-loss procedures within the next 4 months;
  • Long-term user of prebiotics or probiotics (excluding fermented dairy products such as yogurt);
  • Be allergic or intolerance to inulin-type substances;
  • Have participated in in other clinical trials within the past 3 months or are currently participating in other clinical trials;
  • Plan to be pregnant within the next year, are currently pregnant, or are breastfeeding;
  • Deemed unsuitable for participation by the investigator's judgment.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: inulin (prebiotics)
The intervention dose is 10 grams per day. The intervention will last for 4 months.
Dietary supplement: inulin (prebiotics)
The intervention dose is 10 grams per day. The intervention will last for 4 months.
Placebo Comparator: maltodextrin
The intake dose is 10 grams per day for 4 months.
Dietary supplement: Placebo Comparator: maltodextrin
The dose is 10 grams per day for 4 months.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
change in concentrations of blood lipid levels in millimole per liter (mmol/L).
Time Frame: From enrollment to the end of intervention at 4 months
change in total cholesterol and triglycerides levels from baseline to 4-month visit. The values will be reported in mmol/L.
From enrollment to the end of intervention at 4 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
change in frequency of gastrointestinal symptoms
Time Frame: From enrollment to the end of intervention at 4 months
change in frequency of gastrointestinal symptoms such as diarrhea and constipation baseline to 4-month visit
From enrollment to the end of intervention at 4 months
change in concentration of glycosylated Hemoglobin A1c (HbA1c) in millimoles per mole (mmol/mol)
Time Frame: From enrollment to the end of intervention at 4 months
Description: change in concentration of glycosylated Hemoglobin A1c (HbA1c) from baseline to 4-month visit. The values will be reported in mmol/mol.
From enrollment to the end of intervention at 4 months
change in level of insulin resistance
Time Frame: From enrollment to the end of intervention at 4 months
Change in HOMA-IR (homeostatic model assessment of insulin resistance) and adipo-IR (adipose tissue insulin resistance index) from baseline to 4-month visit. HOMA-IR will be calculated based on fasting glucose (mmol/L) and fasting insulin (mIU/L). Adipo-IR will be estimated using fasting insulin (mIU/L) and fasting free fatty acids (mmol/L).
From enrollment to the end of intervention at 4 months
change in body weight in kilograms (kg)
Time Frame: From enrollment to the end of intervention at 4 months
Change in body weight (kg) from baseline to 4-month visit
From enrollment to the end of intervention at 4 months
change in body fat percentage (%)
Time Frame: From enrollment to the end of intervention at 4 months
change in body fat percentage from baseline to 4-month visit. The values will be reported in percentage (%).
From enrollment to the end of intervention at 4 months
change in waist circumference in centimeters (cm)
Time Frame: From enrollment to the end of intervention at 4 months
Change in waist Circumference (cm) from baseline to the 4-month visit.
From enrollment to the end of intervention at 4 months
change in level of gut microbiota abundance
Time Frame: From enrollment to the end of intervention at 4 months
Change in gut microbiota abundance from baseline to 4-month visit
From enrollment to the end of intervention at 4 months
change in level of gut microbiota diversity
Time Frame: From enrollment to the end of intervention at 4 months
Change in gut microbiota alpha and beta diversity from baseline to 4-month visit.
From enrollment to the end of intervention at 4 months
change in estimated glomerular filtration rate (eGFR) in milliliter per minute per 1.73 square meters (mL/min/1.73 m²)
Time Frame: From enrollment to the end of intervention at 4 months
Change in estimated glomerular filtration rate (eGFR) from baseline to the 4-month visit. The Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI ) (2009) method will be used to estimate eGFR value. The value is reported in milliliter per minute per 1.73 square meters (mL/min/1.73 m²).
From enrollment to the end of intervention at 4 months
change in concentrations of liver function markers in units per liter (U/L)
Time Frame: From enrollment to the end of intervention at 4 months
Change in alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyl transferase (GGT) from baseline to the 4-month visit. These values are reported in units per liter (U/L).
From enrollment to the end of intervention at 4 months
change in level of C-reactive protein (CRP) in milligram per liter (mg/L)
Time Frame: From enrollment to the end of intervention at 4 months
Change in C-reactive protein (CRP) from baseline to the 4-month visit. The value is reported in milligram per liter (mg/L).
From enrollment to the end of intervention at 4 months
change in blood pressure in millimeters of mercury (mmHg)
Time Frame: From enrollment to the end of intervention at 4 months
Change in systolic and diastolic blood pressure from baseline to the 4-month visit. The values are reported in millimeters of mercury (mmHg).
From enrollment to the end of intervention at 4 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Huazhong University of Science and Technology

Investigators

  • Principal Investigator: An Pan, Huazhong University of Science and Technology

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

June 1, 2026

Primary Completion (Estimated)

November 1, 2026

Study Completion (Estimated)

November 1, 2026

Study Registration Dates

First Submitted

May 21, 2026

First Submitted That Met QC Criteria

May 21, 2026

First Posted (Actual)

May 28, 2026

Study Record Updates

Last Update Posted (Actual)

June 3, 2026

Last Update Submitted That Met QC Criteria

June 1, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Prebiotics in GLP-1 RA users

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

To protect the privacy of participants, the investigators decide not to share individual data.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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