Standardized extract (EGCG / catechins / polyphenols declared) vs. Green tea leaf powder / matcha
Among 825 on-market green tea extract products with an identifiable primary form, 63.6% use Standardized extract (EGCG / catechins / polyphenols declared) (525 products) and 24.8% use Green tea leaf powder / matcha (205).
| Standardized extract (EGCG / catechins / polyphenols declared) | Green tea leaf powder / matcha | |
|---|---|---|
| Quality tier | Unrated | Unrated |
| Green Tea Extract by weight | — | — |
| Share of market | 63.6% | 24.8% |
| On-market products | 525 | 205 |
| Median declared dose | 100 mg middle half: 50–300 | 500 mg middle half: 100–750 |
| Most common brands | Celsius, Evlution Nutrition, MM Sports Nutrition | Ancient Nutrition, Beachbody, BulkSupplements.com |
Doses are declared per serving in mg. “By weight” is the share of the ingredient that is the nutrient itself (e.g. elemental magnesium in a magnesium salt).
Why Standardized extract (EGCG / catechins / polyphenols declared) is unrated
The form that matches the literature's EGCG-based dose basis, and the one carrying the hepatotoxicity caution (EFSA: >=800 mg EGCG/day as supplement raised transaminases; USP label caution), but efficacy/safety was not compared across standardization levels, so it is not ranked. A row named "EGCG" declares the catechin itself, not the extract, and is kept unresolved (never summed with extract mg).
Source: EFSA ANS Panel 2018, EFSA J 16(4):e05239, PMID 32625874; Oketch-Rabah HA et al. 2020, Toxicol Rep 7:386-402, PMID 32140423
Why Green tea leaf powder / matcha is unrated
Whole-leaf powder carries a lower, unstandardized catechin concentration than a standardized extract, so mg of powder and mg of extract are not equivalent doses; no human comparison was verified, so it is not ranked.