BioStacks
Best Green Tea Leaf Extract for Heart
Top 2 products ranked
Last reviewed May 2026
Clinical dose: 200–500 mg
Why Green Tea Leaf Extract for Heart
Green Tea Leaf Extract plays a supporting role in heart. EFSA safety ceiling: <800 mg EGCG/day from supplements. USP hepatotoxicity warning (2019).
What dose to look for
Clinical studies typically use 200–500 mg of green tea leaf extract. Expressed as EGCG. Sweet spot is 300–500 mg EGCG/day. Stay below 800 mg EGCG/day (EFSA hepatotoxicity threshold). Take with food. Products below this range may not deliver meaningful results.
What the research says
Green Tea Leaf Extract has moderate clinical evidence for heart benefits. 317+ clinical trials support modest cholesterol reduction, but effect sizes are small Learn more
Clinical research on Green Tea Extract (EGCG)
LOW — Epidemiological associations are strong but RCTs are inconsistent · 250–500 mg EGCG/day
- •2015 meta-analysis of 24 RCTs found green tea catechins modestly reduced total cholesterol and LDL but did not significantly affect HDL or triglycerides. PubMed
- •Japanese observational studies (Ohsaki cohort, 40,530 adults) found ≥5 cups/day green tea was associated with 26% lower cardiovascular mortality. But RCTs of green tea extract have not replicated these benefits.
- •Hepatotoxicity risk at high doses (>800 mg EGCG/day on empty stomach). European Food Safety Authority advises caution with concentrated green tea supplements.
