supp.fit

Green Tea Extract: study protocols

11 study groups say how much Green Tea Extract participants took a day. These are the doses the studies gave. They are not a recommendation.

Green Tea Extract: what the research found →

Dose per serving from products

2,759 products in our catalogue print how much Green Tea Extract a serving holds.

Most common: 50 mg to 100 mg, 25% of 2,759 products.

Dose per servingProducts
10 mg or less
95
10 mg to 25 mg
272
25 mg to 50 mg
673
50 mg to 100 mg
683
100 mg to 250 mg
633
250 mg to 500 mg
315
over 500 mg
88

Dose per serving from research

11 study groups in 7 studies say how much Green Tea Extract participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 g to 2.5 g, 55% of 11 study groups.

Daily doseStudy groups
250 mg to 500 mg
4
500 mg to 1 g
1
1 g to 2.5 g
6

Commonly used together

7 of 11 study groups took Green Tea Extract with something else, but nothing that 3 or more different studies gave.

11 study groups

Study
Green Tea Catechin Extract Supplementation Does Not Influence Circulating Sex Hormones and Insulin-Like Growth Factor Axis Proteins in a Randomized Controlled Trial of Postmenopausal Women at High Risk of Breast Cancer
2019 · GTE group · Healthy postmenopausal women; mean age 60.0 years; at high risk of breast cancer
1.32 g1 year538
Hepatotoxicity with High-Dose Green Tea Extract: Effect of Catechol-O-Methyltransferase and Uridine 5'-Diphospho-glucuronosyltransferase 1A4 Genotypes
2023 · GTE treatment group · Postmenopausal women aged 50–70 with high mammographic density; healthy, with BMI 18.5–40 and baseline alcohol consumption no more than 14 g ethanol per day for this secondary analysis
843 mg1 year400
Exposure of Fexofenadine, but Not Pseudoephedrine, Is Markedly Decreased by Green Tea Extract in Healthy Volunteers
2022 · GTE phase · Healthy Japanese volunteers aged 21–45 years, 8 men and 2 women
325 mg1 day10
Influence of green and black tea on folic acid pharmacokinetics in healthy volunteers: potential risk of diminished folic acid bioavailability
2008 · 0.4 mg folic acid with green tea · Healthy volunteers; age and sex not specified
300 mg1 day—
Simultaneous ingestion of dietary proteins reduces the bioavailability of galloylated catechins from green tea in humans
2013 · GT (control) · Healthy normal-weight women
1.75 g1 day24
Influence of green and black tea on folic acid pharmacokinetics in healthy volunteers: potential risk of diminished folic acid bioavailability
2008 · 5 mg folic acid with green tea · Healthy volunteers; age and sex not specified
300 mg1 day—
The safety of green tea extract supplementation in postmenopausal women at risk for breast cancer: results of the Minnesota Green Tea Trial
2015 · GTE · Postmenopausal women aged 50–70 years with high mammographic density and no history of cancer or proliferative breast disease
1.32 g1 year538
Impact of Green Tea Catechin Ingestion on the Pharmacokinetics of Lisinopril in Healthy Volunteers
2021 · GTE phase · Healthy Japanese adults aged 21–29 years; 7 men and 5 women enrolled
325 mg1 day10
Simultaneous ingestion of dietary proteins reduces the bioavailability of galloylated catechins from green tea in humans
2013 · GT + M · Healthy normal-weight women
1.75 g1 day—
Simultaneous ingestion of dietary proteins reduces the bioavailability of galloylated catechins from green tea in humans
2013 · GT + CS · Healthy normal-weight women
1.75 g1 day—