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Green Tea Extract and Blood Sugar: EGCG Evidence Explained
Green tea extract blood sugar benefits are unproven here. Sugar Defender lists green tea leaf seventh, so one mL holds at most 29 mg, far under the 141 to 1,207 mg of catechins used in studies. Extracts in pills have rarely been linked to liver injury, and green tea adds caffeine.
Written by the Sugar Defender label deskUpdated · 4 min read
On the label01
How much green tea extract is in Sugar Defender?
The label lists "green tea leaf" seventh of 22 blend lines and prints no amount. One mL can hold at most 200 divided by 7, or 29 mg.
| Measure | Amount |
|---|---|
| Even split | About 9 mg per mL |
| Label-order ceiling | 29 mg of leaf extract |
| Catechins in studies | 141-1,207 mg a day (NIH ODS, Dietary Supplements for Weight Loss) |
Catechins, such as EGCG, are only part of any extract, so the gap is wider than it looks.
The research02
Does EGCG change glucose?
The sources we cite do not show an EGCG effect on blood sugar. They describe catechins plus caffeine as having at most a modest effect on body weight (NCCIH, Green Tea).
The EGCG glucose idea belongs to the studied doses above, not to a 29 mg ceiling. Green tea is not among the sales page's eight claims.
- Sales headline“The #1 Rated Blood Sugar Formula”No ranking source, rating body or trial is named. No trial has tested Sugar Defender. (Sugar Defender sales page) (FTC, Health Products Compliance Guidance)
- Ingredient count“24 proven ingredients”The page then names 8. The label has 23 lines: chromium plus a 22-ingredient blend, with only one amount printed. (Sugar Defender sales page) (21 CFR 101.36 (eCFR))
- Science headline“New Breakthrough in Blood Sugar Science”No published study of the drops is cited. NCCIH finds little evidence that supplements help diabetes. (NCCIH, Diabetes and Dietary Supplements) (FTC, Health Products Compliance Guidance)
- PromiseSupports healthy glucose levels and “natural weight loss”No product trial. The weight-loss ingredients (African mango, forskolin, raspberry ketone, capsaicin) have weak or no evidence alone. (NIH ODS, Dietary Supplements for Weight Loss) (ADA, Vitamins & Supplements)
- Chromium copyChromium “Reduces Obesity & Lowers Blood Pressure”Glucose studies used 200-1,000 mcg a day with mixed results. One dropper has 0.7 mcg. (NIH ODS, Chromium)
- Bonus titleAn e-book called “Learn How to Manage Type II Diabetes”A book title, not a property of the drops. No supplement treats diabetes; care stays with your doctor. (NCCIH, Diabetes and Dietary Supplements) (FDA, Illegally Sold Diabetes Treatments)
- Popularity line“96% Of Customers Order 6 Bottles”No source or sample size is given, so it cannot be checked. (FTC, How To Evaluate Online Reviews)
- Bottle band“Blood Sugar Support Formula” with the FDA statementStructure/function wording, allowed with the FDA statement. It is not a disease claim. (FDA, Using Dietary Supplements)
Claims as printed on the sales page (Sugar Defender sales page) and the label. Health claims need competent and reliable scientific evidence, generally human trials of the same product (FTC, Health Products Compliance Guidance).
Safety03
Can green tea extract hurt the liver?
Rarely, yes. Liver injury has been reported in some people using green tea products, mostly extracts in tablet or capsule form, and it is uncommon (NCCIH, Green Tea).
A weight-loss fact sheet notes increasing evidence that extract might cause liver damage (NIH ODS, Dietary Supplements for Weight Loss). The risk attaches to concentrated pills.
Stop and call a clinician for dark urine, yellow skin or eyes, or pain under the right ribs.
Sugar Defender: from $49 a bottle60 mL · 2, 3 or 6 bottles · free US shipping on 3 or 6 · 60-day money-back guarantee
See packsCautions04
Does green tea add caffeine and drug interactions?
Yes. Green tea contains caffeine, and at high doses it lowers blood levels of the beta-blocker nadolol (NCCIH, Green Tea).
The label prints no caffeine amount. If you are sensitive, take the drops in the morning, which is our suggestion, not label advice. The label also asks pregnant or nursing women and anyone on medication to see a physician first.
Keep taking prescribed medicine.
If you try it05
How do you order Sugar Defender?
Order through the official order page, which offers 2, 3 or 6 bottles and a 60-day money-back guarantee.
Sugar Defender: from $49 a bottle60 mL · 2, 3 or 6 bottles · free US shipping on 3 or 6 · 60-day money-back guarantee
See packsRead the full caffeine story on the green tea and guarana page, or compare every line on the ingredients page.
FAQ06
Sugar Defender questions people ask
What are green tea catechins?
Catechins are the plant compounds in tea leaves, and EGCG is the best known. The label lists leaf extract and does not say how much is catechin.
Should I skip Sugar Defender if I take a beta-blocker?
Ask your prescriber. High doses of green tea lower blood levels of nadolol, and the label asks anyone on medication to see a physician first (NCCIH, Green Tea).
Who wrote this07
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Isugardefender, a Sugar Defender U.S. shop, not by the manufacturer or the distributor. We earn money when you buy through our order links.
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Check your medicines first, then pick a pack. Three or six bottles ship free in the US and cost less per bottle, and every pack carries the 60-day money-back guarantee.
- Secure checkout on the order page
- 60-day money-back guarantee
- Ships from the U.S.; free on 3 or 6