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Updated: 06 Apr 2026

10 Best Flavonoid Supplements Capsules

#1 Best Pick
Quercetin Dihydrate Capsules | 1170mg | 150 Count | Non-GMO, Gluten Free Supplement | High Potency Formula | by Horbaach

Quercetin Dihydrate Capsules | 1170mg | 150 Count | Non-GMO, Gluten Free Supplement | High Potency Formula | by Horbaach

Brand: HorbΓ€ach
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  • QUERCETIN: Flavonoid in the pigments of various fruits and vegetables
  • ADVANCED SUPPLEMENT: Delivers 1,170mg of Quercetin per serving in quick-release capsules
  • EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency
  • HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
  • NATURALLY FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Artificial Flavor, Sweetener & Non-GMO
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#2 Best Value
Quercetin Supplements Capsules, 5 Months Supply, 150 Caps - Berberine, Stinging Nettle, Turmeric, Black Pepper

Quercetin Supplements Capsules, 5 Months Supply, 150 Caps - Berberine, Stinging Nettle, Turmeric, Black Pepper

Brand: Tenmido
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  • ❀️ Premium Formula: Tenmido Quercetin Capsules combination with 4 more herbal ingredients: Berberine, Nettle, Turmeric, Black Pepper powder.
  • ❀️ Only 1 Tenmido tiny capsule daily, you're supplied as 2-3 capsules compared with others with extra strength.
  • ❀️ Our product comes with 150 capsules bottle. This complex herbal supplement is the optimized solution with super, just 1 vegetarian capsule per servings a day delivers for 5 months supply.
  • ❀️ Guarantee: Our dietary supplement products are produced in GMP, ISO-certified manufacturing facilities. All our supplements are tested by a third-party independent laboratory to ensure the best quality products.
  • ❀️ The extracted active ingredients are manufactured by super-concentrated methods. We would like to distribute this nutrient-dense gift from nature to humans in the most honest way. Free Refund in case unsatisfactory.
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#3 Budget Pick
ForestLeaf Quercetin 500mg with Bromelain, Vitamin C and Stinging Nettle – Advanced Sinus and Allergy Supplement – Natural Vegetable Capsules – Non GMO, Dairy, Gluten, Egg and Nut Free - by (90)

ForestLeaf Quercetin 500mg with Bromelain, Vitamin C and Stinging Nettle – Advanced Sinus and Allergy Supplement – Natural Vegetable Capsules – Non GMO, Dairy, Gluten, Egg and Nut Free - by (90)

Brand: ForestLeaf
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  • Daily Dietary Supplement: Uniquely formulated using a blend of quercetin and bromelain, this supplement from ForestLeaf may help with sinus relief, allergies, cardiovascular and respiratory health.
  • With Stinging Nettle: Every pill contains stinging nettle leaf extract. It contains a wide variety of nutrients that may assist in balancing your natural response for happier living.
  • Manufactured Safely: ForestLeaf supplements are made with vegetable capsules and are dairy, gluten, egg and nut free. All of its products and pills are tested for maximum absorption. There are 45 servings per bottle, 200mg of vitamin C per serving.
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#4 Top Choice
Best Naturals Quercetin with Bromelain Veggie Capsule - 800mg of Quercetin & 165 mg of Bromelain (2400 GDU/g), 120 Count

Best Naturals Quercetin with Bromelain Veggie Capsule - 800mg of Quercetin & 165 mg of Bromelain (2400 GDU/g), 120 Count

Brand: Best Naturals
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  • Supports healthy immune system*
  • Promotes healthy histamine levels*
  • Supports cardiovascular health*
  • No Artificial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish, No Sodium.
  • TOP QUALITY GMP CERTIFIED PRODUCTS - All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world -- Proudly Made in USA -- Purity & Potency.
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#5 Popular Choice
Life Extension Super-Absorbable Soy Isoflavones, 60 vegetarian caps

Life Extension Super-Absorbable Soy Isoflavones, 60 vegetarian caps

Brand: Life Extension
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  • Life Extension Super Absorbable Soy Isoflavones, 60 vegetarian caps
  • NUTRITIONAL_SUPPLEMENT
  • Life Extension
  • Light Brown
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#6 Top Pick
Palmitoylethanolamide (PEA) Supplement – 600mg Micronized PEA with Quercetin & Luteolin – Plant-Based, Vegan Formula – 60 Capsules

Palmitoylethanolamide (PEA) Supplement – 600mg Micronized PEA with Quercetin & Luteolin – Plant-Based, Vegan Formula – 60 Capsules

Brand: RELIEVE THERAPEUTICS PEA
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  • Micronized for Enhanced Absorption: Each capsule delivers 600mg of micronized Palmitoylethanolamide (PEA), formulated to support efficient nutrient uptake.
  • Botanical Blend with Plant-Based Flavonoids: Enriched with Quercetin and Luteolin, naturally sourced flavonoids recognized for their role in antioxidant-rich wellness formulas.
  • Clean, Vegan-Friendly Ingredients: This supplement is crafted without GMOs, gluten, soy, dairy, or artificial additives. 100% plant-based and suitable for vegan lifestyles
  • Designed for Daily Wellness Routines: A naturally derived formula developed to complement everyday health-conscious supplement regimens.
  • Quality You Can Trust: Manufactured under strict standards to ensure consistency, purity, transparency and ideal for ingredient-conscious individuals
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#7 Top Pick
Double Wood Supplements Luteolin Supplement 100mg Servings (120 Capsules, Manufactured in The USA) Potent Polyphenols Flavonoid for Brain and Cardiovascular Support by

Double Wood Supplements Luteolin Supplement 100mg Servings (120 Capsules, Manufactured in The USA) Potent Polyphenols Flavonoid for Brain and Cardiovascular Support by

Brand: Double Wood Supplements
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  • POTENT POLYPHENOL ANTIOXIDANT - Luteolin is a potent antioxidant primarily found in vegetables and some fruits
  • NEUROPROTECTIVE BRAIN SUPPORT - Luteolin belongs to a class of bioflavonoids that has neuroprotective properties and may help support brain health
  • CARDIOVASCULAR SUPPORT - Current research suggests Flavonoids like Luteolin help promote cardiovascular health
  • TWO MONTH SUPPLY: Double Wood's Luteolin supplement contains 60 servings of 100mg (120 capsules with 50mg each)
  • USA PROUD: Our Luteolin 100mg capsules are manufactured / tested in the USA, Gluten Free, and are Non-GMO
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#8 Top Pick
Best Naturals Soy Isoflavones 750 Mg 120 Capsules

Best Naturals Soy Isoflavones 750 Mg 120 Capsules

Brand: Best Naturals
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  • 750 mg per capsule – Each capsule delivers a concentrated amount of soy isoflavones.
  • 120-capsule supply – Designed for consistent daily use.
  • Plant-based source – Derived from soy, a legume naturally containing isoflavones.
  • Convenient once-daily serving – Just one capsule per day.
  • No artificial additives – Free from synthetic colors, flavors, and preservatives.
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#9 Top Pick
Best Naturals Folic Acid 800 Mcg 240 Capsules

Best Naturals Folic Acid 800 Mcg 240 Capsules

Brand: Best Naturals
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#10 Top Pick
Best Naturals Soy Isoflavones 750 mg 120 Capsules (120 Count (Pack of 2))

Best Naturals Soy Isoflavones 750 mg 120 Capsules (120 Count (Pack of 2))

Brand: Best Naturals
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  • 3rd Party Lab Tested for Purity & Quality.
  • 750 mg of Soy Isoflavones per Capsule - 120 Capsules per Bottle.
  • Non-GMO & Gluten-Free.
  • Proudly Made in USA, GMP Compliant, FDA Registered Facility.
  • No Artificial Color, Flavor, or Sweetener, No Preservatives, No Sugar, No Milk, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.
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