Best Flavonoids 2025

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Last Updated - 27.07.2025

Best Choice

01

TAVI

Cocoa flavonoids, 60 capsules, 500 mg per day

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9.9

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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What are the advantages of taking cocoa flavonoids? For EU legal reasons, we are unfortunately not permitted to do so-called health claims (so-called "health claims"). If necessary, we recommend that you also inform you about available sources or get medical advice in the pharmacy.
Vegan, German production
The analysis certificate can be found under "Safety and product resources"
No additives, high dose
Each batch independently laboratory-tested
Cocoa naturally contains caffeine. However, the caffeine content of a daily dose is low. It corresponds to the caffeine content in about half a teaspoon of freshly brewed coffee
A daily dose corresponds to the cocoa flavonoid amount in approx. 80 g chocolate.
60 capsules, 500 mg cocoa flavonoids per daily dose

34,70 €
Value for Money

02

TAVI

Flavonoids | Bioflavonoids | 90 Capsules | Cocoa Flavonoids, OPC, Green Tea Extract, EGCG

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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What are the advantages of taking bioflavonoids or flavonoids? For EU legal reasons, we are unfortunately not permitted to do so-called health claims (so-called "health claims"). If necessary, we recommend that you also inform you about available sources or get medical advice in the pharmacy.
The analysis certificate can be found under "Safety and product resources"
One daily dose (3 capsules) corresponds to the amount of flavonoid in about half a bar of chocolate, five tea bags of green tea and the grape seeds of about one kg of grapes
No additives, optimal dosage
Each batch independently laboratory tested. Vegan
Cocoa flavonoids + green tea flavonoids + grape seed flavonoids (OPC)
Both green tea and cocoa naturally contain caffeine. However, the caffeine content of the product is low. A daily dose contains about as much caffeine as a teaspoon of freshly brewed coffee
760 mg flavonoids/bioflavonoids per day, 90 capsules, made in Germany

29,70 €
03

Greenfood

Bioflavonoids, 500 mg, Hochdosiert, 120 Vegi Capsules of Citrus fruits. Extra Strong Antioxidant. No Artificial Additives. GM Free. Vegan., , ,

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9.6

Exceptional

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Pure and natural: our flavonoid capsules are free from artificial additives such as magnesium stearate and silicon dioxide and are gluten, lactose free and vegan. Enjoy the 100% purity and safety, laboratory tested without genetic engineering.
Optimal value for money: Enjoy high-quality flavonoid capsules at a high dose at a price that inspires. With 450 mg per capsule, you get an excellent offer for your daily support with Greenfood.
High-quality raw material: our bioflavonoids capsules contain 450 mg high-dose flavonoids from citrus fruits per capsule. Perfectly dosed for easy and effective daily intake.
Focus on your well-being: Immerse yourself in our wide range of dietary supplements, made in Europe. Customer satisfaction is our top priority, so we offer you excellent value for money. If you have any questions about our high-quality products, we are always at your disposal
Anti-oxidative protection: flavonoids support the protection of cells from oxidative stress and promote overall cell health. Ideal for your daily supplement to support a healthy lifestyle for antioxidant protection and cell health

22,99 €
04

CLAV

Citrus Bioflavonoids - Made from Bitter Orange Extract and Grapefruit Extract with Diosmin Hesperidine Naringin - Flavonoids High Dose - 60 Capsules - Vegan

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9.5

Excellent

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The power of bitter orange and grapefruit - valuable, high-dose bioflavonoids made of bitter orange extract and grapefruit extract with 264 mg bioflavonoids per daily serving and 7920 mg / 60 capsules.
Sustainable and vegan: we develop and produce in Germany according to HACCP, GMP and ISO 9001 quality standards. Our products carry the V-label quality seal, are gluten and lactose free and our brown glass bottle is fully recyclable.
Superfood capsules - made from 840 mg bitter orange extract (citrus aurantium extract) and 20.2 mg grapefruit extract (citrus paradisi extract) free from additives, vegan, gluten and lactose free.
Flavonoids high dose - with the 3 glycosides naringin, diosmin and hesperidine. Among plant substances, they take a special role, which is why they are also recommended by the German Society for Nutrition.

21,90 €
05

NOW

Now Food, Citrus Bioflavonoids, with Vitamin C and Rutin, 100 Vegan Capsules, Laboratory Tested, Soy Free, Gluten Free, Vegetarian

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9.4

Excellent

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Original product: the recommended intake differs from the US consumption recommendation due to the German and European guidelines. Please consult a doctor or alternative practitioner for an individual intake recommendation
No undesirable additives: Citrus Bioflavonoids from Now Foods is gluten-free and produced without genetic engineering
High dose: one dose, two capsules, Citrus Bioflavonoids from Now Foods contains 100 mg vitamin C, 1400 mg citrus bioflavonoid complex and 100 mg rutin, which you can feed your body every day
HIGH QUALITY: Now Foods Citrus Bioflavonoid Capsules are tested in independent laboratories for quality and purity
Good compatibility: Now Foods Citrus Bioflavonoids is characterised by good bioavailability and is suitable for a vegan lifestyle

19,29 €
06

Esenca

Grapefruit Seed Extract 500 mg - 120 Capsules - 45% Flavonoids - Equivalent to 225 mg per Capsule - High Dose - Made in Germany

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9.1

Excellent

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SUSTAINABLE PACKAGING We pack our dietary supplements in tablet jars.
Natural Origin: grapefruit seed extract is a pure natural product, free from artificial additives and preservatives.
Made in Germany - Produced according to strict quality guidelines, with a focus on purity, sustainability and high-quality ingredients.
Highly concentrated grapefruit seed extract - 100% pure extract with 45% flavonoids for versatile uses, ideal for natural support of well-being and hygiene.
100% vegan and sustainable: suitable for vegans and vegetarians, environmentally friendly, free from animal ingredients and produced with our environment in mind.

19,90 €
07

Feel Natural

OPC Grape Seed Extract - 240 Capsules - Highest OPC content according to HPLC - Laboratory tested OPC from French grapes - 1000mg extract with 700mg OPC - Vegan, produced in Germany

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9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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YOUR SATISFACTION: We keep distances as short as possible: our nutrients are therefore deliberately produced in certified German facilities. Just as short: The way to us, if you are not satisfied or have questions. Contact us.
PREMIUM QUALITY AND 100% VEGAN: Our grape seed extract is obtained from original French grapes. The product is suitable for vegans and vegetarians as we use a vegan capsule shell (not gelatine-based) and no other animal ingredients.
OPC HIGH-DOSAGE: The OPC content per daily dose (2 capsules) is 700mg according to the conservative HPLC measurement method. This is 70% and thus the highest OPC content according to HPLC on Amazon. This means: Each capsule contains 350mg of pure OPC (according to HPLC). This makes our product a market leader in terms of OPC concentration. With one capsule per day, one pack lasts 8 months (240 capsules).
MANUFACTURED IN GERMANY: This product is manufactured in strictly inspected and certified facilities in Germany.
LABORATORY TESTED AND WITHOUT UNWANTED ADDITIVES: Tested by certified German laboratories. Free from unwanted additives such as anti-caking agents, magnesium stearate, flavourings, colourings or preservatives. Gently extracted without chemicals, based only on water and ethanol. Only what matters: grape seed extract and a vegetable capsule shell (HPMC).

23,99 €
08

TRUE NATURE

Grapefruit Extract Organic Drops - 1440 mg Organic Flavonoids / 100 ml High Dose - Grapefruit from Organic Cultivation - Vegan - Natural & No Additives - TRUE NATURE

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25% Off
8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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XXL pack - 100 ml organic grapefruit seed extract drops with 1440 mg bioflavonoids per 100 ml. A daily dose of 2.5 ml provides 3000 mg of extract, of which 88 mg vitamin C (110% NRV) and 36 mg bioflavonoids. Lasts for 40 days with daily use. The ml indication is on the pipette.
Without undesirable additives - Our grapefruit seed extract drops are there for everyone - vegan, lactose-free, gluten-free. Free from additives such as magnesium stearate, preservatives, sweeteners or dyes. Only pure nature.
Power from organic grapefruits - The organic extract is obtained from whole organic grapefruits, including seeds and shells, and gently processed. This preserves the natural plant substances of the fruit - for a pure and unadulterated addition to your daily routine.
Citrus protective shield - Our grapefruit seed extract naturally contains a lot of vitamin C and valuable bioflavonoids, as well as the bitter substance naringin, which has long been appreciated for its versatile uses. Ideal for supporting your body daily with the natural power of grapefruit.
Care you can count on: As a German company with the highest quality standards, we rely on high-quality ingredients and strict controls. Despite the purest processing, certified (see laboratory certificate/analysis confirmation in the product images), an independent German laboratory purity and active ingredient content of each batch. The raw material is bottled in Germany according to ISO and HACCP standards.

14,99 € 19,99 €(25% Off off)
09

Native Vital

Grapefruit Seed Extract, Important: 98% Bioflavonoids, 180 Capsules, Made in Germany, Vegan, Premium Quality

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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With us you will receive 300 mg bioflavonoids per daily dose, while a whole 100 ml drop bottle often contains only 1200 mg bioflavonoids.
Why are capsules better than drops? Because we do not need solvents (often glycerine i.e. sugar) and antioxidants for the capsules. Compare for yourself.
Use the power of Bioflavionide. Each capsule of Native Vital's Grapefruit Seed Extract provides a strong dose of this valuable substance.
Proudly made in Germany, our products are subject to strict quality standards. Each batch is tested in laboratories for quality and purity, including testing for microorganisms and heavy metals.
Our grapefruit seed extract is easy to dose and take, so you can easily and conveniently take advantage of the grapefruit kernels.
Our grapefruit seed extract is 100% natural, derived from sustainably grown grapefruits. We completely do not use unwanted additives such as preservatives, dyes and flavour enhancers.
Our capsules will last for 2 years, even after opening. Drops often need to be consumed within 6 months.
Our capsules are vegan and contain no animal ingredients. They are lactose-free, gluten-free and are therefore also suitable for people with food intolerances or special dietary requirements.
High-dose grapefruit seed extract: with 98% (300 mg) bioflavonoid content per daily dose, our capsules offer one of the highest concentrations on the market.
At Native Vital we rely on purity and quality. Our products contain no artificial fillers or binders - only pure, natural and plant ingredients. Benefit from the power of nature with our grapefruit seed extract.

25,90 €
10

Naturoo Nutrition

BlO OPC 70% Grape Seed Extract High Dose for 1 to 2 Months 60 Capsules Rich in Antioxidants, Polyphenols and Flavonoids 500 mg Powder per Dose Helps Lower Blood Pressure

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8.5

Good

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Main highlights

Natural Antioxidants for Skin Care: OPC are powerful antioxidants that help support skin health: they help protect the skin from external agents and preserve its elasticity and radiance.
Promote general circulatory well-being: OPC can help strengthen blood circulation and help support the overall well-being of the circulation.
Rich in OPC and highly bio-available for better effectiveness: 500 mg grape seed extract (2 capsules) guarantee a content of 70% OPC (HPLC UV methods) and polyphenols, which are among the most concentrated on the market.
Premium organic extracts: natural extraction of grape seeds without chemical solvents (green extraction), compliant with organic cultivation. Grapevines are among the most pesticide treated crops (an average of 15 plant protection treatments per year), whose concentration increases during extraction. The choice of organic guarantees a product without residue.
Natural packaging is 100% recyclable and opaque for better protection of vitamins and active ingredients against UV radiation and light.
High-quality production in a laboratory that uses HACCP methods and follows the highest quality standards + controls in Germany by independent laboratories. No additives or fillers in the formula. No animal gelatin, gluten free, lactose free. 100% vegan and vegetable formula (active ingredients and capsule).
Expiry Date: July 2026 Contains 70% OPC according to HPLC method and 90% by UV method. Extracted in Bordeaux, France, from grapes sourced exclusively from the European Union.

9,97 €