Botanicals · INGREDIENT PROFILE
Green tea extract
Research topics: Metabolic outcomes · Weight-management research
Also searched as: green tea, green tea extract, EGCG, Camellia sinensis. Names and formulations are not necessarily interchangeable.
01 / MATCH THE FORMULA
The details to pin down.
Ingredient identity & form
Distinguish brewed tea from concentrated extract; record EGCG, total catechins, and caffeine.
Dose, duration & study fit
EGCG and caffeine amounts, dosing context, duration, diet, and participant characteristics.
Record the tested dose from the original study. A study dose is not a recommended dose or proof that every claim at that dose is supported.
02 / READ IN CONTEXT
What changes the interpretation?
Keep beverage studies separate from extract studies. Read adverse events and actual changes in weight or metabolic endpoints.
- Population: Does the study population match your intended audience?
- Comparison: What changed compared with the control group—not just compared with baseline?
- Consistency: Do independent studies agree? Include null findings, limitations, and adverse events.
- Claim wording: Does the measured outcome support the strength and scope of the proposed claim?
03 / FOLLOW THE SOURCES
Research to explore.
A selected index of randomized trials and research reviews. Open the source to verify methods, results, corrections, and applicability.
2026 · Randomized Controlled Trial
Effect of Epigallocatechin Gallate Supplementation on Inflammation, Iron Status, and Metabolomic Profiles in Women With Obesity: A Pilot Randomized Controlled Trial. ↗
PMID 42613905 · DOI 10.1002/mnfr.70575 · PMC record available
2026 · Randomized Controlled Trial
Effects of Green Tea Extract Supplementation on Inflammatory Cytokines Among Postmenopausal Women with Overweight or Obesity-A Secondary Analysis of a Randomized Controlled Trial. ↗
PMID 41515260 · DOI 10.3390/nu18010143 · PMC record available
2026 · Meta-Analysis · Systematic Review · review-article
Effects of green tea use on the metabolic profile of postmenopausal women: systematic review and meta-analysis. ↗
PMID 42228178 · DOI 10.1007/s00394-026-04005-8 · PMC record available
2025 · Meta-Analysis · Systematic Review
Effect of Epigallocatechin Gallate on Glycemic Index: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. ↗
PMID 40885603 · DOI 10.1016/j.clinthera.2025.07.015
How these references were selected
First four Europe PMC relevance-ranked MED records matching the recorded ingredient/outcome query and randomized-trial, systematic-review or meta-analysis publication types. No favorable-result filter. Bibliographic discovery only; not a full-text review or exhaustive bibliography.
Captured 2026-10-08: 4 records shown from 254 matching index records. Index counts describe this query, not supporting studies or evidence quality.
(TITLE_ABS:"green tea" OR TITLE_ABS:"EGCG") AND (TITLE_ABS:"supplementation" OR TITLE_ABS:"weight") AND SRC:MED AND (PUB_TYPE:"Randomized Controlled Trial" OR PUB_TYPE:"Systematic Review" OR PUB_TYPE:"Meta-Analysis")Run the recorded index search ↗04 / GO DEEPER
Guidance & source databases.
NCCIH: Green tea↗Database links open a fresh search. Registry entries can identify ongoing or unpublished trials; registration alone is not evidence of benefit.
Educational research navigation. Not individual medical advice, a safety clearance, regulatory approval, or a complete review of this ingredient. Bibliographic snapshot: 2026-10-08.