Clinical Study to Evaluate the Effects and Safety of Green Tea Extract on Blood Glucose Regulation
A Randomized, Double-blind, Placebo-controlled, Parallel-group Study to Evaluate the Effects and Safety of Green Tea Extract(GTE) Consumption on Blood Glucose Regulation
1 other identifier
interventional
84
1 country
3
Brief Summary
This study was conducted to investigate the effects of green tea extracts on reducing blood glucose level
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Aug 2022
Typical duration for not_applicable
3 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
August 8, 2022
CompletedFirst Submitted
Initial submission to the registry
August 20, 2024
CompletedFirst Posted
Study publicly available on registry
September 19, 2024
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
December 31, 2024
CompletedSeptember 19, 2024
August 1, 2024
2.4 years
August 20, 2024
September 9, 2024
Conditions
Outcome Measures
Primary Outcomes (1)
Change in fasting glucose level
blood glucose level detection
Baseline, week 12
Secondary Outcomes (4)
changes of indicator of lipid metabolism
Baseline, week 12
OGTT
Baseline, week 12
blood biomarkers
Baseline, week 12
change in waist circumference(cm)
Baseline, week 12
Study Arms (2)
GTE (Green tea extract)
ACTIVE COMPARATORthree tablets once daily
Placebo
PLACEBO COMPARATORthree tablets once daily
Interventions
Eligibility Criteria
You may qualify if:
- Males and females aged between 19 to 64 years
- BMI between 18.5 and 29.9kg/m²
- fasting blood glucose between 100 and 139 mg/dL (Note: if some subjects with blood glucose range of 126 - 139 mg/dL, those who are taking or requre medication must be excluded to meet ethical standards.)
- subjects who voluntarily decide to participate in this study and sign the informed consent form.
You may not qualify if:
- Individuals taking to obesity, dyslipidemia, or uncontrolled hypertension at the screening
- Individuals diagnosed with diabetes and who have taken medications related to blood glucose
- Individuals congenital enzyme deficiencies related to sugar metabolism.
- with hypersensitivity to the test food or ingredients(e.g., green tea, caffeine).
- Individuals ongoing treatment diseases significantly related glucose metabolism.
- Individuals with a history of surgery significantly related to glucose metabolism within the last 6 months
- diagnosed with gastrointestinal diseases, cardiovascular diseases, uncontrolled chronic medical conditions, thyroid disorders, or active malignant tumors requiring medication
- Individuals with liver function impairment or acute or chronic hepatitis or liver cirrhosis
- Individuals with renal disorder
- Individuals with a weight change of 5 kg or more within the last 3 months.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (3)
Kangbuk samsung hospital
Seoul, South Korea
Seoul National Universtiy Hospital
Seoul, South Korea
The Catholic University of Korea St. Vincent's Hospital
Seoul, South Korea
Study Officials
- PRINCIPAL INVESTIGATOR
Jae-Heon Kang, MD, PhD
Kangbuk Samsung Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- OTHER
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 20, 2024
First Posted
September 19, 2024
Study Start
August 8, 2022
Primary Completion
December 31, 2024
Study Completion
December 31, 2024
Last Updated
September 19, 2024
Record last verified: 2024-08