Product Reviews
Green Tea Review: Supplements, Brewable, Matcha, and Bottled
 

Reviewed and edited by Tod Cooperman, M.D. Tod Cooperman, M.D.
Initial Posting: 5/5/18   Last Update: 6/30/20

Find the Best Green Tea and Matcha, Including Supplements and Drinks

CL Tests Find Amounts of EGCG in Green Tea Products Vary Widely

Green Tea Supplements, Drinks, and Brewable Teas Review
Green tea supplements, brewable teas, matcha, and bottled drinks compared in this review
Bigelow Green Tea - Decaffeinated Kirkland (Costco) Green Tea A Blend of Sencha/Matcha Salada Green Tea Naturally Decaffeinated
Celestial Seasonings Green Tea (K-Cup) Kiss Me Organics Organic Matcha Solgar Green Tea Leaf Extract
Davidson's Organics Gunpowder Green Kroger Green Tea Spring Valley [Walmart] Green Tea
GNC Herbal Plus Green Tea Complex Life Extension Mega Green Tea Extract Superfoods by MRM Raw Matcha Green Tea Powder
Green Foods Organic Matcha Green Tea Lipton Green Tea Swanson Superior Herbs Green Tea Extract
Harney & Sons Organic Green NOW EGCg Green Tea Extract Trader Joe's Specialty Teas Decaffeinated Green Tea
HerbaSway HerbaGreen Numi Organic Tea Gunpowder Green Twinings 100% Organic Pure Green
Honest Tea Green Tea with Honey Organic Kenko Tea Matcha Vitacost Green Tea Extract
Ito En Oi Ocha Unsweetened Green Tea Organic Matcha DNA Whole Foods Market Green Tea
Jade Leaf Organic Japanese Matcha Pure Leaf Unsweetened Green Tea Zhou Green Tea Extract
Bigelow Green Tea - Decaffeinated Celestial Seasonings Green Tea (K-Cup) Davidson's Organics Gunpowder Green GNC Herbal Plus Green Tea Complex Green Foods Organic Matcha Green Tea Harney & Sons Organic Green HerbaSway HerbaGreen Honest Tea Green Tea with Honey Ito En Oi Ocha Unsweetened Green Tea Jade Leaf Organic Japanese Matcha Kirkland (Costco) Green Tea A Blend of Sencha/Matcha Kiss Me Organics Organic Matcha Kroger Green Tea Life Extension Mega Green Tea Extract Lipton Green Tea NOW EGCg Green Tea Extract Numi Organic Tea Gunpowder Green Organic Kenko Tea Matcha Organic Matcha DNA Pure Leaf Unsweetened Green Tea Salada Green Tea Naturally Decaffeinated Solgar Green Tea Leaf Extract Spring Valley [Walmart] Green Tea Superfoods by MRM Raw Matcha Green Tea Powder Swanson Superior Herbs Green Tea Extract Trader Joe's Specialty Teas Decaffeinated Green Tea Twinings 100% Organic Pure Green Vitacost Green Tea Extract Whole Foods Market Green Tea Zhou Green Tea Extract
Make sure the green tea supplement, brewable tea, matcha, or drink you use passed our tests and is right for you!

Isn't your health worth it?
  
SEE THE REPORT NOW!

If you already are a member, SIGN IN now.
Summary:
  • What is it? Green tea is made by lightly steaming freshly cut leaves of Camellia sinensis. It is higher in catechins (polyphenols) such as EGCG than black tea. It is sold in many forms such as tea bags, loose teas, matcha powders, bottled teas, and as supplements containing extracts with high concentrations of catechins. Green tea also contains caffeine — about half as much per cup as in coffee. (See What It Is).
  • What does it do? Health benefits are generally associated with catechins in green tea, most notably EGCG. Benefits include a modest reduction in LDL cholesterol, reduced growth of uterine fibroids and associations with lower risks of cardiovascular disease, certain cancers and type 2 diabetes. These benefits are generally associated with consumption of 3 or more cups per day. Studies with green tea supplements typically provide 200 mg to 300 mg per day. The evidence regarding weight loss and memory benefits is mixed and may relate to the caffeine in green tea. (See What It Does).
  • Best products? Our tests (see What CL Found) found that amounts of EGCG in products vary widely: Supplements provided 46 mg to 500 mg per daily serving. Brewable teas (e.g., bags) provided 27 mg to 79 mg per cup. Matcha powders provided 73 mg to 119 mg per teaspoon (2 grams). Bottled green tea provided 20 mg to 59 mg per cup. (Click on each to see our Top Picks).
  • Problems with products? Four products failed our tests. One contained only 55% of its listed EGCG and three others contained significantly less caffeine than claimed on their labels. Although green tea leaves can accumulate toxic lead, none of the products were found to provide significant amounts of lead.
  • Cautions: Green tea can interfere with a range of drugs. Liver toxicity is a concern with high doses of EGCG from green tea supplements. Avoid excessive green tea when pregnant. Excessive tea consumption can make bones and teeth brittle. Don't drink very hot tea due to an association with gastric cancer. (See Concerns and Cautions).

You must be a ConsumerLab.com member to get the full green tea test results along with ConsumerLab's Top Picks and tips on how to choose and use green tea. You'll get results for 30 green tea products including supplements, brewable green teas, matcha powders, and bottled green tea beverages. Twenty-six of these were selected by ConsumerLab.com and four others passed the same testing in CL's voluntary Quality Certification Program. In the review, you'll learn:
    • ConsumerLab's Top Picks for green tea supplements, brewable teas, matcha powders and bottled green teas based on quality, value, and even taste
    • Which products passed or failed our tests and why
    • How much EGCG, total catechins, and caffeine is in each product
    • Why contamination with lead, cadmium and arsenic is a concern, and what our tests showed
    • Price comparisons showing how to get a green tea product with EGCG at the lowest cost
    • Clinical information about the efficacy of green tea and dosage
    • Cautions and potential side effects for green tea -- including drug interactions, concerns with plastic tea bags, a warning for women who are pregnant or nursing, liver toxicity, and effects on bones and teeth 
SEE THE REPORT NOW!

If you already are a member, SIGN IN now.
Finding the Best Green Tea and Avoiding Dangers with CL Founder, Dr. Tod Cooperman

Learn More About Green Tea

ConsumerLab.com Answers -- for Green Tea Review: Supplements, Brewable, Matcha, and Bottled
Question:
Are supplements which claim increased absorption or improved bioavailability telling the truth? Is it worth paying more for these? Are there concerns? Get the answer >>

Question:
I take warfarin (Coumadin), an anticoagulant drug. Are there supplements I should avoid, or be taking, due to this drug? Get the answer >>

Question:
I recently purchased some matcha green tea powder claiming to contain up to "137 times the EGCG" that is in brewed green tea. However, the label does not state an actual amount of EGCG and the company would not provide me with any analysis. Is the label true? Get the answer >>

Question:
Can L-theanine help as a sleep aid? Will ConsumerLab.com be testing these supplements? Get the answer >>

Question:
Do any supplements help with gum disease or periodontitis? Get the answer >>

Question:
Which supplements can help to lower blood pressure? Get the answer >>

Question:
Which bottled green teas have the most EGCG? Get the answer >>

Question:
I've heard that grapefruit juice can interact with medications because it inhibits an enzyme that breaks down drugs in the body. Do any supplements interact the same way with drugs? Get the answer >>

Question:
Does microwaving green tea affect the amount of EGCG or other catechins in the tea? Get the answer >>

Question:
Are there any supplements I should avoid when taking acetaminophen (Tylenol)? Get the answer >>

Question:
Can I get the new coronavirus (2019-nCoV) from supplements from China? Get the answer >>

Question:
After developing kidney stones, I was told to avoid tea -- but recently I've heard that green tea might actually be helpful for kidney stones. Is that true? Get the answer >>

Question:
How significant are the risks to drinking tea from China from heavy metals? Get the answer >>

Question:
It is okay to add milk to green tea? Get the answer >>

Question:
Which supplements help reduce the risk of colorectal cancer? Get the answer >>

Question:
Which dietary supplements and health foods contain high levels of lead? Get the answer >>

Question:
What is Brain Bright and can it really improve memory or cognition? Get the answer >>

Question:
Is it true that green tea can interact with blood-thinning medications like warfarin (Coumadin) or clopidogrel (Plavix)? Get the answer >>

Question:
How does white tea compare to green tea and black tea in terms of antioxidant catechins? How about caffeine levels and lead contamination? Get the answer >>

Question:
Can I take cholesterol-lowering statin medication with green tea? Get the answer >>

Question:
Are there vitamins or supplements that can reduce my risk of breast cancer? Do any increase cancer risk? Get the answer >>

Question:
Can green tea help prevent the flu? Get the answer >>

Question:
Is green tea from Japan contaminated with radiation? Get the answer >>

Question:
Is Modified Citrus Pectin (MCP) helpful for prostate or breast cancer? Get the answer >>
#271#
 
 
Join |  Sign In
   
Join Us on Facebook! Join Us on Instagram! Join Us on Twitter! Join Us on YouTube! Join Us on YouTube!
Product Reviews
Brands Tested
Health Conditions
Encyclopedia
CL Answers
Clinical Updates
News
Recalls & Warnings
Recommended Intakes
Where to Buy Products
Testing Program
How Products Were Tested
Quality Certification Program
Join CL Today
Testimonials
Join Free Newsletter
Group Subscriptions
Gift Membership
About Us
The CL Seal
CL Survey
Privacy Policy
Sitemap
Contact Us/Help

©2020 ConsumerLab.com, LLC. All rights reserved. A single copy of a report may be printed for personal use by the subscriber. It is otherwise unlawful to print, download, store or distribute content from this site without permission.
ConsumerLab.com name and flask logo are both registered trademarks of ConsumerLab.com, LLC. This site is intended for informational purposes only and not to provide medical advice.