Green Tea Extract and EGCG: What the Research Says
Published October 02, 2026 · Updated October 04, 2026 · Soda Slim Editorial Verification Desk
Quick answer:
Each capsule has 130 mg green tea extract: 127.4 mg polyphenols, 97.5 mg catechins and 58.5 mg EGCG, with up to 3.9 mg caffeine. A 2009 meta-analysis found small effects at best, and high-dose green tea extracts have rare liver injury reports. Stop and call a doctor for dark urine or yellow skin.
Green tea extract breakdown, per capsule
| Component | Amount |
|---|---|
| Extract total | 130 mg |
| Polyphenols (98%) | 127.4 mg |
| Catechins (75%) | 97.5 mg |
| EGCG (45%) | 58.5 mg |
| Caffeine (under 3%) | up to 3.9 mg |
What EGCG is
Epigallocatechin gallate, or EGCG, is the main catechin in green tea leaves. Brewed tea has far less than concentrated extracts. At 58.5 mg EGCG per capsule, Soda Slim sits well below doses used in many supplement studies, so findings from high-dose trials do not transfer directly.
Check the numbers against the formula facts or the label breakdown.
What the evidence shows
The 2009 meta-analysis by Hursel and colleagues pooled trials of green tea with caffeine and reported a small difference in weight, with the effect weaker in people who habitually consume caffeine. NCCIH's green tea page says there is no strong evidence that it helps with weight loss.
The honest summary: modest or inconclusive, with results that vary between people and between studies.
Check the Numbers, Then Decide
One-time payment, no auto-ship, 60-day money-back guarantee. Compare the 2, 3 and 6 bottle packages, read the safety section first, then order only if the math works for you.
The liver safety note
NIH LiverTox and NCCIH describe rare cases of liver injury linked to concentrated green tea extract supplements, mostly at higher doses or taken on an empty stomach. Most people never experience this, but the warning is real. Stop the capsule and call a doctor if you notice dark urine, yellow skin or eyes, or abdominal pain.
Anyone with liver disease, or who takes medicines processed by the liver, should ask a doctor first. See safety.
Brewed tea versus extract
A cup of brewed green tea typically has a few dozen milligrams of EGCG on a good day, plus 25 to 45 mg of caffeine, and a long record of ordinary use. Concentrated extracts deliver more catechins in a single swallow, and that concentration is the reason for the liver caution. Drinking tea does not carry the same warning.
If you already take other green tea extract capsules or fat-burner products, do not add them to this one. Avoid taking green tea extract on a completely empty stomach, and tell your doctor about it if you have liver conditions or take statins, blood thinners or other prescription drugs.
Some people find the catechins slightly bitter in the stomach. Food with the capsule usually helps. Review ingredients for the complete context.
Bottom line on green tea extract
Green tea is among the better studied botanicals in this area, yet the best summary remains a small average effect that is easy to lose among normal variation. Its main practical value here is as a source of catechins with a small caffeine bonus. Keep expectations modest, monitor how you feel, and stop at the first sign of liver trouble. Periodic breaks and honest tracking beat any assumption that more extract means better results. Never exceed the one capsule daily on the label.
Using it sensibly
- Take one capsule in the morning as directed, with food if your stomach is sensitive.
- Do not add other green tea extract supplements.
- Count the small caffeine contribution within your daily total.
- Log your weight trend and any symptoms; see the log template.
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Frequently Asked Questions
How much EGCG is in each capsule?
The 130 mg green tea extract provides 58.5 mg EGCG, along with 97.5 mg total catechins and 127.4 mg polyphenols, per the printed Supplement Facts.
Does green tea extract cause liver problems?
Rarely. Liver injury reports exist for concentrated extracts. Stop and call a doctor if you notice dark urine, yellow skin or eyes, or abdominal pain.
Is the weight loss effect proven?
No. A 2009 meta-analysis reported small effects, and NCCIH says evidence is not strong. Expect modest or no change, and rely on nutrition and movement first.
Sources and Official References
- Hursel et al. 2009, green tea and weight loss meta-analysis (PubMed)
- Green Tea: What You Need To Know (NCCIH)
- Weight Loss and Dietary Supplements (NCCIH)
Always verify against the printed Supplement Facts panel on your bottle. See the full ingredient panel, the safety section, the AI Knowledge Hub or return to the homepage FAQ.
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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Educational content, not medical advice.