Product Comparison
Compare the three formats — the standardized capsule (trial-relevant dose), the decaffeinated option, and the whole-food matcha alternative. In green tea's comparison, the honest principle is: match the dose (100–300mg EGCG), choose the form that fits your caffeine tolerance, and know the liver-safety threshold.
At a glance
NOW Green Tea Extract
Jarrow Formulas Green Tea 500 (Decaffeinated)
Ceremonial Matcha Powder
Multi-dimensional comparison
Multi-dimensional Comparison
| Metric | 🏆NOW Green Tea Extract NOW Foods | Jarrow Formulas Green Tea 500 (Decaffeinated) Jarrow Formulas | Ceremonial Matcha Powder Various (culinary-grade quality varies) |
|---|---|---|---|
| Delivery Form | Capsule | Capsule | Powder |
| Strength | 400mg green tea extract (standardized to ~180mg EGCG) | 500mg decaffeinated green tea extract | Variable catechin content (~60–130mg EGCG per serving) |
| Servings / Container | 100 | 100 | 30 |
| Retail Price | $14.99 | $19.95 | $29.99 |
| Cost / Serving | $0.15BEST 💰 | $0.20 | $1.00 |
| Overall Score | 80/100 | 76/100 | 60/100 |
| 3rd-Party Testing | None stated | None stated | None |
| Vegan Friendly | ✓ Yes | ✓ Yes | ✓ Yes |
Did you know?
The evidence-backed EGCG zone
The dose range used in most metabolic trials — equivalent to 2–5 cups of brewed tea. Consistent improvements in cholesterol, blood pressure, and metabolic markers, with the broadest safety margin.
The liver concern threshold
Doses above 800mg EGCG daily — especially on an empty stomach — are where the rare hepatotoxicity cases cluster. EFSA has reviewed this signal. Stay well below this unless clinically directed.
Caffeine per capsule
A standard green tea extract capsule contains roughly 15–35mg of naturally occurring caffeine (unless decaffeinated) — about one-quarter to one-half of a cup of coffee. Modest but relevant for caffeine-sensitive people.
The calm-alert compound
Green tea's signature amino acid — promotes alpha-wave brain activity (calm focus) and modulates caffeine's jittery tendency. Extracts may reduce or eliminate this, changing the experience from 'green tea calm' to 'mild caffeine alert.'
The timing rule
Take green tea extract with meals, not on an empty stomach. The liver-injury cases cluster around fasting consumption — this single habit significantly reduces the risk.
The individual variable
Your gut bacteria convert EGCG into the metabolites that actually reach your bloodstream. Individual microbiome differences may explain why green tea's benefits vary between people — a variability no label can predict.