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5 Best Green Tea Extracts Rich in Antioxidants
Written By Supplement Institute Review Team
Imagine this: the power of six cups of green tea condensed into a capsule.
EGCG—a potent antioxidant in green tea—protects cells, supports heart health, boosts metabolism, and helps fight diseases
My sister and I were discussing the benefits of green tea when my six-year-old nephew overheard and suddenly piped up, “Why do grownups drink that yucky stuff?” In defense of that “yucky stuff,” I quickly responded, “Green tea reduces inflammation, supports heart health, lowers cholesterol, and boosts memory and cognitive function!” There was silence for a second, followed by his response: “Wow… is there anything it doesn’t help with?” The answer? No!
The problem? Do you have the time to brew cup after cup—or the tolerance for that taste—to get the benefits? That’s where green tea extract comes in. We voted the Zenwise Health Green Tea Extract best overall out of five popular brands. Want more options? Find out who took the runner-up spot below!
5 Best Green Tea Extracts of 2025
Zenwise Health Green Tea Extract
Best Overall
The Zenwise Health Green Tea Extract goes beyond the benefits of green tea. Firstly, it packs 725 mg of green tea extract per serving. And 98 percent of the extract consists of polyphenols—powerful antioxidants—and 50 percent of those polyphenols are EGCG, a distinctive plant compound that reduces inflammation, supports weight loss, and helps prevent heart and brain diseases.
Let’s take a closer look at the Zenwise Green Tea Extract:
Zenwise Green Tea Extract Review
Moreover, what sets this supplement apart is the addition of 25 mg of green coffee bean extract, which provides an extra boost to your metabolism and energy levels. Essentially, the formula is great for people who juggle a busy lifestyle and need help staying sharp and energized. We voted it best overall due to the quality ingredients, high star rating, and the inclusion of green coffee bean extract. Furthermore, a happy customer shared the following review: “I’ve been taking Zenwise Green Tea extract for three months now. Normally, I get sick easily; however, I’ve not been sick in the last few months. The only different thing is that I’m taking this extract. I believe this has boosted my immune system! I’m happy about this and will continue taking it to see how it does long-term.” —LadyCarolina
Nature’s Nutrition Green Tea Extract
Runner-Up
If you want to maximize the pure benefits of green tea, Nature’s Nutrition Green Tea Extract is our runner-up. This supplement delivers 1,000 mg of green tea extract per serving. Like the best overall, 98 percent of it consists of polyphenols, with 45 percent being EGCG and 75 percent being catechins, both of which are great for your health. Unlike the best overall, our runner-up focuses solely on green tea without additional ingredients like green coffee bean extract. The result is a highly concentrated dose of antioxidants and polyphenols, equivalent to drinking 3 to 4 cups of green tea.
So, why would you choose this one over the best overall? It’s particularly suitable if you’re looking for strong antioxidant support and sustained energy throughout the day. Plus, with 240 capsules at an affordable price, it’s a smart choice if you’re looking for long-term value.
Horbäach Green Tea Extract
Highest Dose
If you’re looking for a green tea extract that combines potency with affordability, the Horbäach Green Tea Extract delivers a powerful 1,800 mg of green tea extract per serving. A higher dose, like 1,800 mg versus 1,000 mg, primarily amplifies the benefits such as enhanced metabolism, stronger antioxidant protection, and more effective fat burning. However, a higher dose can also increase the risk of side effects, such as digestive issues or jitteriness, especially in individuals sensitive to caffeine or certain compounds in green tea. So, it’s important to balance the potential for greater benefits with the possibility of increased side effects and consult a healthcare professional before increasing your dosage.
Moreover, what sets this brand apart is its commitment to quality and purity. The capsules are non-GMO, gluten-free, free from artificial colors and flavors, and, most importantly, laboratory-tested.
Zhou Nutrition Green Tea Extract
Lower Dose
Sometimes you choose a supplement simply because you trust the brand. The Zhou Green Tea Extract contains 500 mg of green tea extract per serving and is backed by a reputable name known for quality and consistency. Each capsule is standardized to contain 95 percent polyphenols, 80 percent catechins, and 50 percent EGCG, offering a solid dose of antioxidants and gentle energy support.
Compared to our best overall and runner-up picks, this brand delivers a lower dosage of green tea extract per capsule. However, this could be a plus for those who prefer to start with a milder dose. Moreover, what really sets this brand apart is the company’s commitment to quality—every batch is tested in their Utah lab, ensuring you’re getting a clean, non-GMO, and gluten-free product. If you’re someone who likes to stick with a brand you know and trust, this lower-dose green tea extract could be the right choice for you.
NOW Green Tea Extract
Best Decaffeinated Pick
Prefer a decaffeinated pick? How about one with a 4.5-star rating? The NOW Green Tea Supplement contains 400 mg of decaffeinated green tea extract, with 200 mg of EGCG and 80 percent catechins—giving you the same phytonutrient content as 2-3 cups of green tea, without the caffeine. This makes it a solid choice for those looking to enjoy the benefits of green tea without the stimulant effects.
Moreover, the capsules are produced under strict GMP (Good Manufacturing Practices) standards, with every step of the manufacturing process thoroughly inspected, from ingredient stability to product formulation. This ensures a supplement that meets high-quality standards and safety. Additionally, the capsules are non-GMO, vegan, and free from common allergens like soy, gluten, and dairy.
Choosing the Best Green Tea Extract: A User's Guide
If You’re Like Many People—You Know Green Tea Is Good for You, but You’re Still Not a Fan of the Taste
All the Benefits You Love, Minus the Flavor You Don’t
My Grandma was always ahead of the curve. Every morning, she’d brew herself a cup of green tea, not because she loved the taste—she actually hated it—but because she knew about the incredible health benefits.
Back then, green tea extracts weren’t an option. If she wanted the benefits, she had to tough it out and drink multiple cups a day. She’d often say, “It’s not about the taste; it’s about what it does for your body.” And she was right—Grandma was as sharp as ever well into her 90s, and she credited green tea as one of her secrets.
These days, we have it a little easier. With Zenwise Health Green Tea Extract, you can get all those benefits in just one capsule a day, without enduring the taste grandma disliked so much. Now, you can take care of your health as she did, but in a way that fits your lifestyle, without the need to brew cup after cup.
What You Need to Consider When Choosing a Green Tea Extract
1. Ingredients
Ideally, you want an extract that contains pure green tea leaves with minimal additives or fillers. Zenwise Health Green Tea Extract includes green coffee bean extract for an added metabolism boost, while Nature’s Nutrition focuses solely on green tea for pure antioxidant support.
Moreover, consider complementing the green tea extract you choose with a quality vitamin C supplement. Vitamin C enhances the absorption and stability of green tea catechins, making them more effective. Together, they provide stronger antioxidant and anti-inflammatory benefits, supporting overall health, including cardiovascular and skin health.
2. Safety
While green tea is generally considered safe, concentrated extracts can sometimes pose risks, especially if taken in large doses. Look for extracts that have been third-party tested for purity and contaminants.
Additionally, it’s wise to consult with your healthcare provider before starting a green tea extract, particularly if you have any underlying health conditions or are taking other medications.
3. Potency
The potency of a green tea extract refers to the concentration of active compounds, particularly polyphenols and catechins like EGCG (epigallocatechin gallate). A more potent extract will contain a higher percentage of these compounds, providing greater antioxidant benefits in a smaller dose.
When comparing extracts, check the label for information on the concentration levels; some may list the total polyphenol content, while others might focus on specific catechins. Potency is important if you’re seeking specific health benefits, such as weight loss, enhanced metabolism, or immune support, so choose an extract that aligns with your health goals.
4. Polyphenols
Polyphenols are the powerhouse antioxidants in green tea that contribute to its health benefits. These natural compounds help protect your cells from damage, reduce inflammation, and may lower the risk of chronic diseases. So, naturally, it’s important to pick one with a high polyphenol content, as this indicates a more effective extract. A higher polyphenol count typically means you’re getting more beneficial compounds that make green tea so valued.
5. EGCG
EGCG, or epigallocatechin gallate, is one of the most potent catechins in green tea and is known for its powerful antioxidant properties. It’s often the focus of studies related to green tea’s health benefits, including weight management, heart health, and cancer prevention.
So, when choosing between extracts, check the EGCG content to ensure you’re getting a product with a substantial amount of this critical compound. Some extracts highlight their EGCG concentration on the label, often as a percentage of the total polyphenols.
6. Decaffeinated
If you’re sensitive to caffeine or prefer to avoid it, a decaffeinated green tea extract might be the best option. Decaffeinated extracts allow you to enjoy the benefits of green tea without the stimulating effects of caffeine, which is particularly useful if you plan to take the supplement later in the day. The Now Green Tea Supplement retains high levels of polyphenols and EGCG and is a top decaffeinated green tea extract on the market today.
A Personal Note
In my opinion, everyone should take three essentials: green tea, whether in extract or tea form, a quality collagen supplement, and a vitamin C supplement. These three together offer a powerful combination of antioxidants, support for skin and joint health, and overall wellness benefits that are hard to beat. Ultimately, adding these to your daily routine can make a real difference in how you look and feel.
Green Tea Extract FAQs
Are there studies backing the effectiveness of green tea extract over drinking green tea?
Yes, studies show that green tea extract can be more effective than drinking green tea because it provides a concentrated dose of beneficial compounds like EGCG. This means you can get more antioxidants with fewer cups of tea. However, the overall benefits can still vary depending on individual factors like diet and lifestyle.
When would you choose the Nature’s Nutrition Green Tea Extract, the runner-up, over Zenwise Health, the best overall extract?
You'd pick Nature’s Nutrition Green Tea Extract if you want a higher dose of pure green tea—1,000 mg compared to Zenwise’s 725 mg. It's perfect if you're after green tea benefits without the added green coffee bean.
Are there real customer testimonials backing the effectiveness of the Zenwise Health Green Tea Extract?
Most definitely. Here are three testimonials about the positive effects of the extract. (You can find more testimonials about Zenwise's green tea extract here!)
Immune Boost: "LadyCarolina" Shares Her Experience
“I've been taking Zenwise Green Tea Extract for three months now. Normally, I get sick very easily; however, I've noticed I have not been sick in the last few months. The only different thing is that I'm taking this extract. I believe this has boosted my immune system! I'm happy about this and will continue to take to see how it does long term.” —LadyCarolinaNo Brewing Needed: "Two-times" Highlights Convenience
“This gives you all the benefits of green tea with no brewing.” —Two-timesHealth Support: "Mike" Notes a Positive Impact
“My oncologist thinks this supplement might be the reason my white cell count has not increased for several months. Naturally, I will continue to use this product.” —MikeIs Zenwise Health a well-known, trustworthy brand?
Yes, Zenwise Health is a reputable brand in the supplement industry. They've earned a solid reputation for making high-quality products with carefully sourced ingredients. Many customers trust Zenwise for their commitment to quality and transparency, and their products often receive positive reviews for both efficacy and value.
Does green tea contain caffeine?
Yes, green tea contains caffeine, though generally less than black tea or coffee. The exact amount can vary depending on factors like the type of green tea and how it's brewed. If you're sensitive to caffeine, decaffeinated green tea extracts are available, such as the NOW Green Tea Extract.
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