Green Tea Extract Product Buyer’s Guide (updated July 2024)

How To Find A High Quality Effective Green Tea Extract

An image of the site's  Senior Editor - Sally Harper.
  Sally Harper
  Senior Editor
  Health & Wellness Advice

Green Tea Extract is flooding the market as the latest must-have nutritional supplement due to its high antioxidant content. This unique superfood provides some incredible benefits including boosting antioxidants, reducing oxidative stress, encouraging fat loss, reducing inflammation, potentially reducing LDL cholesterol and blood pressure, and improving insulin resistance. 

Thinking to give Green Tea Extract a try? Navigating the market can be tricky. Every Green Tea Extract supplement is different and those little differences can be greatly significant. Because we’ve been confused before and we don’t think anyone should have to feel that way, we’ve carefully examined the available products for you in order to determine which are effective and which aren’t worth a dime. With our helpful guide, you no longer need to worry about wasting your money on cheap, ineffective supplements. We’ll help you find the right product to get the results you desire. 

5 Things To Look For In An Effective Green Tea Supplement

Every Green Tea Extract supplement should be:

  • Standardized to 90+% Polyphenols for maximal antioxidant intake.
  • Standardized to 50% EGCG, the most studied and beneficial antioxidant.     
  • Enhanced by a thermonutrient such as BioPerine®, which speeds up and increases absorption for faster and better results.
  • Decaffeinated so as to not interfere with your sleep or lifestyle.
  • Produced in an FDA registered facility that complies with the cGMP guidelines for safe manufacturing. 

What We Uncovered

With a little research, we were able to spot the companies that provide genuine, high-quality products. Unfortunately, we mostly found companies that were trying to exploit the latest health trends.

  1. In short, many of the Green Tea Extract supplements do not contain the correct doses that have been shown to get great results such as offering a high standardization of ~98% Polyphenols and 50% EGCG. 
  2. Moreover, often they are not 100% certified for purity and may even include unnecessary ingredients that provide no benefits whatsoever. Some formulas do not contain the same potency as they claim on their labels with many companies even hiding their labels or supplement facts to prevent consumers from better understanding what is contained in the formulas.

Some companies think that sticking a label on their bottle with the words ‘Green Tea Extract’ is enough to make consumers want to buy their product, even if there is no justification for why the product should work. Unfortunately, many consumers fall for this scheme and are later disappointed by a lack of results.


Our Research

Our research identified key areas that we felt raised concerns when purchasing Green Tea Extract supplements. With so many products out there, we felt that we needed clear parameters as to what to look out for when investing in a Green Tea Extract product.

  • Will it be effective? This is perhaps the main concern for consumers. After all, why waste your money on something that is useless? To determine which products we could rate as beneficial, we looked to see if they contained the correct ingredients, how potent they were, and their grade of purity. Consumers need to be aware that there is a precise science to creating an effective formula which can weed out the ineffective from the effective products.
  • Will it be too expensive for me to purchase? People often think that by paying more, they will get better quality. This is not always the case. Don’t risk your hard-earned money on something that has a price which is over inflated and unrealistic. On average we found the best Green Tea Extracts to be selling between $40-$50.
  • Is the company open and transparent? Manufacturers should be transparent and open, providing you with as much information and guidance as they can. You need to be consumer savvy in order to determine which are the best manufacturers to purchase products from and which are not worth your while.

Finding Effective, Quality Green Tea Extract Supplements?

There are several key elements to look out for that can pretty much guarantee a product’s authenticity.

  1. Monitoring By A Third-Party: There are organizations that will independently monitor and track the reputation of a company and assess their customer satisfaction levels. A company’s reputation is incredibly important within the health industry. Make sure you select a top provider that has an impeccable reputation and is backed by an independent third-party monitoring organization.
  2. 100% Money-Back Guarantee: Many companies offer you a money-back guarantee if their products do not bring the results that you are looking for. Some are better than others. Choose a company that has a solid satisfaction guarantee. A strong guarantee demonstrates a manufacturer’s confidence that their product will deliver the desired results.
  3. External Testing: This is not the same as a monitoring company. Third-party testing substantiates and verifies the quality of the manufacturer’s product. It can be very expensive for manufacturers to undertake and even disqualify entire shipments of products that don’t reach the correct standards. That said, when manufacturers don’t have independent quality control and testing, there is no way of knowing if their products are effective, or indeed, safe.

Our Research Results

Thorough research takes time and money, which most people don’t have an endless supply of. So we did the work for you – saving you both!

When it comes to Green Tea Extract, it’s all about antioxidants. Free radicals and oxidative stress are the culprits behind many conditions and diseases in the body. Luckily, our body has its own antioxidants and absorbs antioxidants from food. Green Tea is a great source of antioxidants but a well crafted supplement can be even better. A high quality Green Tea Extract will contain ~98% polyphenols, over 75% catechins, and approximately 50% EGCG. Furthermore, there should be an ingredient to increase nutrient absorption, such a BioPerine®, which speeds up and maximizes results. Lastly, you want to be sure that it is manufactured in a safe manner by checking if it is made in an FDA approved facility that complies with the cGMP guidelines. 

Most products failed to pass our specific criteria.

There are some manufacturers who fail their customers by adding unnecessary ingredients that weaken the potency of their products. Other manufacturers simply fail when they use a lower standardization than what has been proven effective in scientific studies. Others filled their capsules with binders, additives, or preservatives that could potentially be harmful. All but a few of them avoided quality control testing. We are very confident in the brands that we did pick. Given our stringent parameters and reasons for choosing our top products, we are sure our top picks will help you achieve the results you are looking for.

Why Did We Select Our #1 Choice As Our Top Green Tea Extract?

Our top pick not only met all of our strict criteria for a quality Green Tea Extract supplement, but it also beat it!

Look at what it contains:

  • 98% Polyphenol antioxidants – The highest percentage
  • 50% EGCG – The optimal percentage for health benefits
  • BioPerine® – Most others do not include this beneficial ingredient
  • Decaffeinated Green Tea Extract –  All the health benefits with no disruptive side effects
  • GMP certification – Certification that attests to the product’s safety

Our Top Green Tea Extract Product Choices

We think you will agree that our top choice stands above and beyond the competition. Approved Science’s Green Tea is a top quality product that is produced by a company with an excellent reputation that uses external independent monitoring and testing. Combine that with an incredible money-back guarantee policy and this an undoubtedly solid pick for our #1 choice.

Green Tea Extract Report

Rating: Excellent


Money Back Guarantee
Consumer Feedback
Company Reputation

Editor’s Choice

Approved Science Green Tea

If you are looking to improve your overall health and help slow down the effects of aging, then Approved Science Green Tea is an extract that deserves your undivided attention. Of all the Green Tea Extract supplements currently available on the market, this is the one that deserves a closer look and very likely, the one that will change your life!

It contains the highest quality, high potency decaffeinated Green Tea Extract that we found on the market. It contains an impressive standardization of 98% polyphenol antioxidants, 80% catechins, and 50% EGCG. In addition to the Green Tea Extract, this product contains BioPerine® which increases nutrient absorption and maximizes results. It does not contain any additives or preservatives and is totally 100% safe to use with no long-term side effects.

Quality: Approved Science Green Tea is manufactured in an FDA registered lab and contains high-grade, natural, clinically-verified ingredients that are GMP certified.

Reputation: Approved Science’s reputation is top quality. They are well known in the industry and are an established company that provides great customer service, secure and easy checkout as well as prompt, efficient delivery. This manufacturer has several third-party monitoring services, including buySAFE, Norton, and Trustee, as well as an A+ rating from the quality monitoring company QualityTrusted. Approved Science’s commitment to the health industry and consumers is considered to be excellent.

Money Back Guarantee: Every item sold is supported by a 60-day 100% money-back guarantee. Such guarantees from manufacturers show strong confidence in their products’ ability to deliver results. Great news for consumers!

Bottom Line: If you are looking for a product that ticks all the boxes for an effective Green Tea Extract supplement from an established reputable company with an excellent money-back guarantee, this is the supplement for you.

It would be good to note that, due to high demand, Approved Science Green Tea is often sold out. To avoid having to back order, don’t hesitate to make that purchase when you see it in stock.

See The Full Review


Rating: Good



Now Foods Thermo Green Tea™

Promoted as a health product to scavenge free radicals and support thermogenesis, Now Foods Thermo Green Tea is our next product up for review. This product contains a 700 mg serving which is a higher dosage than the other Now Foods Green Tea Extract which contains only 400 mg but is otherwise not a very different product.

Rather than giving percentages and leaving you to do the math, Now Foods gives the significant numbers in mg. For example, Thermo Green Tea is not decaffeinated and contains up to 7 mg of caffeine. Additionally, it contains 350mg EGCG which would equal the desired 50%. However, there is no bioavailability enhancer in this formula to increase nutrient absorption and results.

Now Foods uses only pure ingredients that have been tested for purity. The manufacturing facility is FDA recognized and complies with the Good Manufacturing Practices (GMP). Continue reading our review for a more in-depth look at this product.

Click here to read the full review


Rating: OK


True Veda Organic Green Tea Extract

This product states that it is for helping support your immune system and promoting natural metabolism. It contains only 1 active ingredient, as can be expected. Any Green Tea Extract product should only contain Green Tea without any additives or preservatives. True Veda Organic Green Tea Extract is standardized to a 2:1 Herb to extract ratio. The complete concoction contains only 50% polyphenols. Additionally, it doesn’t seem to be decaffeinated as it contains “less than 10% caffeine” which could be quite a lot.

This product is manufactured in a GMP compliant facility and third-party tested. This product is on the cheaper side in terms of price but the lower dosage and standardization justify the price. Unfortunately, True Vida does not offer any satisfaction guarantee and refunds are only available for unused products that are still in the original packaging. This lack of a guarantee or helpful refund policy can be understood as a reflection on the company’s faith in their product. If they truly believed in its effectiveness, they would stand behind their product with a money-back guarantee.

Despite its testing and lack of unnecessary ingredients, there were a few matters that knocked this product down into third place. This product might not be as strong as you need it to be and we noticed a few inconsistencies. With only 50% polyphenols, how much EGCG is actually in each of these capsules? Continue reading our full review for more information

Click here to read the full review

What You’ll Discover:

Which Green Tea Extract supplement is the BEST BUY and comes with a great GUARANTEE!
Which formula and ingredients are the most EFFECTIVE and work the fastest?
How NOT to get ripped off! BE AWARE of poor quality and cheap products.

Top 6 Items to Consider:

  1. Ingredients
  2. Cost Per Serving
  3. Product’s Testing Results
  4. Company’s Reputation
  5. Consumer Reviews
  6. Return Policy & Satisfaction Guarantee

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