A Chip Off The Old Block: Finding The Best Green Tea Extract

August 5, 2022

If you were looking into the health benefits of green tea, then it is quite possible that you may have stumbled onto green tea extract.

So, what exactly is this supplement and how does it measure up to the real thing?

Furthermore, are the reported health benefits true?

If so, how can you find the best green tea extract?

Well, there are certainly a lot of questions! Fortunately for you, you can discover all the answers that you are looking for below…

Our Picks

What is Green Tea Extract?

To begin with, let’s take a look at what green tea extract really is.

The medical definition of green tea is a “green tea polyphenol mixture isolated from Camellia sinensis”.

In short, green tea extract is a concentrated form of green tea.

The exact potency of the green tea extract may vary from brand to another.

green tea in a white ceramic cup

Types of Green Tea Extract

Green tea extracts are available in two main forms.

You can take it either as a pill or in liquid form.

It is best to take the pills as it is easier to calculate just how much green tea and associated ingredients you are consuming.

In turn, it will be easier to moderate your intake and reduce the risk of any side effects.

Tablets are also great if you don’t enjoy the taste of green tea.

The Health Benefits of Green Tea Extracts

Green tea actually contains a number of antioxidants including flavonoids, vitamins, and polyphenols such as EGCG.

Due to this, extracts can have a positive impact on your health.

Here are some of the health benefits associated with green tea extracts:

Reduces Oxidative Stress

Oxidative stress is caused by an imbalance of free radicals and antioxidants in the body.

This can result in cell and tissue damage which can cause a whole host of medical conditions.

The good news is that the green tea extracts can increase antioxidant capacity within the body.

In doing so, it helps to correct the imbalance and reduce the risk of oxidative stress.

May Help to Battle Prostate Cancer

There is some evidence that green tea supplementation can have a positive impact on people diagnosed with prostate cancer.

Men who were given green tea extracts were found to have lower levels of cancer growth hormones in their blood.

Thus, green tea could play a role in inhibiting the growth and spread of prostate cancer.

It is also possible that the supplement could help to prevent the onset of this disease as well.

May Reduce the Risk of Cardiovascular Disease

One experiment looked at the impact of green tea extracts on cholesterol levels.

Individuals with mildly and moderately elevated cholesterol levels were given supplements on a regular basis.

At the end of the study, the total cholesterol and triglyceride levels had lowered.

This function could act as an add-on for cholesterol interventions. In turn, it could help to prevent a large number of cardiovascular diseases.

Could Help to Prevent Onset of Neurodegenerative Diseases

Green tea extracts have shown to have neuroprotective properties.

This means that it could be quite useful in warding off neurodegeneration.

As a result, it could play a role in the prevention and treatment of Alzheimer’s disease, Parkinson’s disease, and similar conditions.  

May Improve Dental Health

Research has shown that Japanese green tea extract has interesting antibacterial properties.

In particular, the supplement is effective against a bacteria that is responsible for dental caries.

So, a regular supplementation of green tea extracts could help to keep cavities at bay.

May Help to Lose Weight

Green tea extracts have been found to have both thermogenic and fat oxidation capabilities.

In layman’s terms, this means that the supplement can help you to use up more energy and expend fat.

With time, this can lead to both weight loss as well as weight loss management.

Green Tea vs. Green Tea Extract – What’s the Difference?

As green tea extract is derived from green tea, it stands to reason that these two products have several things in common.

However, are there differences in these components as well?

For one thing, green tea extract boosts antioxidant capacity and activity at a greater rate than green tea.

What’s more, it does this while reducing the side effects typically associated with the caffeine content of green tea.

So, does this mean that the green tea extract is superior?

Well, not exactly.

Unlike green tea, the extract doesn’t contain a full profile of nutrients. Instead, it consists of only certain elements.

Due to this, green tea extracts may not have as many benefits as the best green tea.

And, as you will see below, the concentration of nutrients in green tea extracts isn’t always a good thing…

cup of fresh green tea

What You Should Know About Taking Green Tea Supplements

While there are several health benefits to be enjoyed with green tea supplements, there are certain precautions that you need to take as well.

Beware the Risk of Liver Damage

It is important to be aware of the fact that green tea extracts can cause liver injury in certain cases.

This is probably due to the excessive amount of catechins in the extracts.

With green tea, you only get a certain amount of catechins.

However, as green tea extracts are a concentrated dose, the catechin content is far higher.

Thus, it is important to limit your consumption of green tea extracts – stick to around 500mg a day – no more!

If you have a history of liver disease or have certain liver conditions, you should steer clear of green tea extracts completely.

In the event that you experience any side effects at all, you should stop using the supplements immediately.

If you do have specific health concerns or want to err on the side of caution, you should speak with a doctor before taking green tea extract.

How Much Caffeine is in Green Tea Extract?

Green tea extract has less caffeine than green tea, but it still contains caffeine.

The exact content can vary from one brand to another, so you will need to check on this.

If you are caffeine sensitive, you should be aware that even lower doses of caffeine can still have a negative impact on your sleep.

How to Select the Best Green Tea Supplements

As green tea extracts fall under the category of supplements, the FDA can’t review them.

Thus, you have to be even more careful when selecting the right brand.

Here are the top tips to pay attention to:

Check Green Tea Content

The actual green tea content can vary from one brand to the next.

As such, it is important to check that the supplement is 100 percent or near to it.

Otherwise, it no longer becomes a green tea extract.

Examine the Labels

As mentioned, each brand is quite different.

Due to this, you have to read the labels perfectly.

Always check the content of EGCG, polyphenols (catechins), and caffeine.

As mentioned, higher isn’t always better. So, you should opt for the brand with moderate levels in each case.

If you are caffeine sensitive, select a brand that is low in caffeine.

Always check the exact content to know how much you are consuming with every capsule.

Be Aware of Additional Ingredients

Some extracts may contain additional ingredients.

These should always be natural and have health benefits. Just as importantly, they should only be there in minute amounts.

If you are unfamiliar with a particular ingredient, make sure to do your research and figure out what it is.


Best Green Tea Extract Brands

These are the best green tea pills available on the market:

Best EGCG Green Tea Extract

Zenwise Health Green Tea Extract
7,966 Reviews
Zenwise Health Green Tea Extract
If you are looking for maximum health benefits, then this brand should certainly do the trick for you.

What We Like:

  • High EGCG Content: you are likely to experience a greater number of health benefits with this brand as it contains around 362.5mg of EGCG.
  • Fortified with Vitamin C: the supplement is further fortified with vitamin C ensuring that it is even healthier for you.
  • Low in Caffeine: you are unlikely to feel jittery with this supplements as it contains a lower amount of caffeine.

What We Don’t Like:

  • High Polyphenol Content: there is over 700mg of polyphenols in this extract. As such, you should take no more than one pill a day. You may also want to avoid taking this pill on consecutive days as well.

Best Green Tea Extract for Weight Loss

Squared Nutrition Green Tea Extract
480 Reviews
Squared Nutrition Green Tea Extract
This extract could provide you with the boost that you need with your weight loss program.

What We Like:

  • High Quality Green Tea Extract: this extract consists of around 98 percent of green tea. This makes it a high-quality extract that may provide you with more benefits.
  • Good Weight Loss Components: there is a good balance between the catechin content and the caffeine. Thus, it may help with weight loss.
  • Appropriate Dosage: the dosage is just right, ensuring that you won’t be consuming more catechins than necessary.

What We Don’t Like:

  • May Have Varying Impact: the weight loss impact can greatly differ from one person to the next.

Best Decaffeinated Green Tea Extract

Life Extension Mega Green Tea
1,335 Reviews
Life Extension Mega Green Tea
Not a fan of the jitters, this brand will make it far less stressful for you to take green tea extracts.

What We Like:

  • Caffeine-Free: this extract is completely caffeine free – it is made from decaffeinated green tea leaves. As such, it shouldn’t cause any restlessness or sleep issues.
  • Good EGCG Content: this contains a good EGCG content allowing you to enjoy a higher number of health benefits associated with green tea extracts.
  • Easy to Take: the pill is easy to swallow and is quite digestible as well.

What We Don’t Like:

  • High Dosage: this dose is quite high so you shouldn’t take more than one a day. At the same time, you should take these supplements sparingly.
NOW Green Tea Extract
3,939 Reviews
NOW Green Tea Extract
If you are looking for the safest option for enjoying green tea extract, this brand helps you to do that.

What We Like:

  • Good Dosage: this has a lower dosage of catechins, which is actually a good thing. This drastically reduces the risk of side effects.
  • Adequate EGCG Content: the EGCG content in this green tea extract is quite good, making it suitable for boosting your health.
  • Low Caffeine Content: you are less likely to have to contend with jitters or sleep problems with this extract.

What We Don’t Like:

  • Must Be Taken with Food: if taken on an empty stomach, this extract can cause nausea in some individuals.
Zhou Nutrition Green Tea Extract
4,009 Reviews
Zhou Nutrition Green Tea Extract
If you want a slight energy burst, while also enjoying the additional benefits of green tea supplements, this brand will do it for you.

What We Like:

  • High Quality Extract: the company uses high quality ingredients and tests the supplements to ensure that they are safe and efficient.
  • Safe Dosage: this is within the range for a safe dose of green tea extract. Nevertheless, you shouldn’t take more than one a day, regardless of the instructions.
  • Gentle Energy: this has just enough caffeine to give you a boost in energy without leading to any side effects associated with caffeine.

What We Don’t Like:

  • Can Take a While to Get Used To: it may take you a few days or longer to adjust to the caffeine content in this extract.

So, there you have it – the ultimate guide to green tea extracts.

It is clear that you can’t simply choose any old supplement. You have to carefully select one with maximum benefits and minimal risk of side effects.

This advice is especially important to remember if you are planning on selecting your own brand.

Did you enjoy this post? If so, head over to our Pinterest page. We have plenty more just like this. There is a lot to learn about green tea in general!

About the Author
Dr. Dheena Sadik
Dr. Dheena Sadik is a consultant Nutritionist and Dietician. She has over a decade of experience in the health and fitness industry.
Learn more
An Important Disclaimer: The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment.
Affiliate links / Images from Amazon Product Advertising API. Tea Leafed is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to amazon (.com, .co.uk, .ca etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. As an Amazon Associate I earn from qualifying purchases.
Copyright © 2024 · Tea Leafed · All Rights Reserved