Green Tea Extract / EGCG
Epigallocatechin Gallate (EGCG)
Potent catechin polyphenol that inhibits catechol-O-methyltransferase (COMT), promotes thermogenesis, scavenges reactive oxygen species, and modulates cell signaling pathways including PI3K/Akt
Typical longevity dose: 200-400 mg EGCG/day
Price Comparison
| Product | Vendor | Price | Per Serving | Trust | |
|---|---|---|---|---|---|
NOW Foods EGCg Green Tea Extract 400mg 180 Capsules 400mg · capsule · 180 servings | iHerb | $11.62 | $0.06 | 8 | Buy |
NOW Foods EGCg Green Tea Extract 400mg 90 Capsules 400mg · capsule · 90 servings | iHerb | $11.62 | $0.13 | 8 | Buy |
Life Extension Mega Green Tea Extract Decaf 725mg 100 Capsules 725mg · capsule · 100 servings | iHerb | $20.25 | $0.20 | 8 | Buy |
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Key Research
Green tea catechins with caffeine significantly increased energy expenditure and fat oxidation
Hursel R et al. (2011). International Journal of Obesity
EGCG crosses the blood-brain barrier and exhibits neuroprotective properties against oxidative damage
Pervin M et al. (2018). Molecules
Interaction Warnings
Iron supplements
EGCG chelates non-heme iron, reducing absorption; separate by 2+ hours
Blood thinners
High-dose green tea extract may have mild anticoagulant effects
Liver (hepatotoxicity)
Very high doses (>800mg EGCG) on empty stomach linked to rare liver injury cases; take with food
Synergies
Caffeine
Caffeine and EGCG synergistically increase thermogenesis and fat oxidation
Quercetin
Quercetin may enhance EGCG bioavailability by inhibiting COMT and efflux transporters
Disclaimer: This information is for educational purposes only and is not medical advice. Research citations are provided for reference — consult your healthcare provider before starting any supplement regimen. Prices are estimates and may not reflect current retail pricing.