Short answer: EGCG (epigallocatechin gallate) is the catechin in green tea extract most associated with modest increases in fat oxidation and daily caloric expenditure — a real, evidence-backed, but incremental effect.
What EGCG is studied for
- Fat oxidation — modest increases measured in controlled studies
- Caloric expenditure — small but statistically significant support
- Antioxidant activity — a well-established secondary benefit
The caffeine factor
Green tea extract naturally contains caffeine alongside EGCG — this is the ingredient most commonly responsible for mild jitteriness in sensitive users within a "stimulant-light" formula. It's not caffeine-free, just lighter than a multi-source stimulant stack.
Realistic expectations
Studies typically show single-digit percentage differences over 8-12 week periods alongside normal diet and activity — meaningful, but not dramatic. Treat it as a complementary factor, not a standalone weight-loss solution.
💡 The honest framing: green tea extract is genuinely one of the better-researched weight-management ingredients — just don't expect it to work in isolation from diet and activity.
Green tea extract, alongside six other disclosed ingredients
Not a standalone claim.
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