Best Flavonoid Antioxidant Supplements (2026 Guide)
We selected products based on ingredient composition, delivery technology, user review volume and consistency, and relevance to immune or circulatory support
The Verdict
- Best Overall: Quercetin with bromelain, vitamin C and zinc - 1215mg per serving — Great for immune support: high 1,215 mg serving with bromelain, vitamin C and zinc for combined absorption and immune nutrients
- Best Value: Arymar Diosmin Plus 500 - Circulatory support supplement — Best for circulatory care: diosmin-focused formula designed to support vein and circulatory health
This guide covers top-rated flavonoid antioxidant supplements chosen for potency, formulation type, and user feedback volume across multiple brands. Picks were selected by comparing ingredient profiles (quercetin, diosmin, hesperidin), delivery technologies, and review-based consistency of reported benefits
Top Picks
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1
Best Overall Quercetin with bromelain, vitamin C and zinc - 1215mg per serving
Great for immune support: high 1,215 mg serving with bromelain, vitamin C and zinc for combined absorption and immune nutrients
Quercetin phytosome capsules with ginger, bromelain, zinc picolinate and vitamin C from organic sources. Supports immune health and antioxidant activity, with positive feedback on whole-food ingredients and ease of swallowing
- quercetin phytosome 500mg
- bromelain 200mg
- zinc picolinate 15mg
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2
Quercetin 1000mg vegan capsules (pack of 2) - Doctor Recommended Supplements
Good vegan option: high-dose quercetin in plant-based capsules for those avoiding animal-derived ingredients
Quercetin 1000mg per serving in vegan capsules. Supports immune system and inflammation response. Customers note ease of swallowing and good value
- 1000 mg per serving
- vegan capsule format
- pack of 2
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3
Quercetin 250 mg with QuerceFIT (no bromelain & zinc) - 60 capsules
Solid absorption-focused pick: quercetin with a QuerceFIT phytosome matrix for enhanced bioavailability without added bromelain
Quercetin 250 mg supplement with QuerceFIT for enhanced absorption. Supports immune response and may ease allergy symptoms; valued for high-quality ingredients and easy swallowing, with no bromelain or zinc
- phytosome-enhanced absorption
- Sophora japonica-derived quercetin
- no bromelain or zinc
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4
Best Value Arymar Diosmin Plus 500 - Circulatory support supplement
Best for circulatory care: diosmin-focused formula designed to support vein and circulatory health
Diosmin-based circulatory support supplement with 500mg per tablet. May promote vein health and leg comfort. Customers note positive quality but mixed views on ingredient list
- high-dosage diosmin per tablet
- designed for circulatory health
- user-perceived quality
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5
Quercetin 500mg with Bromelain | Bioactive Phytosome Complex
Balanced bioactive formula: quercetin with bromelain in a phytosome complex to combine absorption and anti-inflammatory support
Quercetin 500mg capsules enhanced with phospholipid binding for improved absorption. Supports seasonal allergies and immune health with all-natural ingredients. Customer notes include effective absorption and some stomach sensitivity for a subset of users
- 20x higher absorption vs regular quercetin
- phospholipid-bound bioavailability
- bioactive phytosome complex
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6
Solaray Mega Quercetin with Bromelain, Vitamin C and Bioflavonoids
Comprehensive blend: quercetin paired with bromelain, vitamin C and bioflavonoids for broad antioxidant and immune-focused support
Antioxidant supplement featuring quercetin with bromelain, vitamin C and bioflavonoids to support immune function and heart health. Customers report improved allergy symptoms and respiratory health
- 600 mg quercetin per serving
- includes vitamin C and rutin
- customers report allergy relief
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7
Quercetin with bromelain, vitamin C, zinc & nettle
Broad-support formula: quercetin with bromelain, vitamin C, zinc and nettle for combined immune and anti-inflammatory effects
Quercetin supplement with a proprietary blend including bromelain, stinging nettle, vitamin C, D, and zinc. Supports immune system and helps with inflammation, per customer feedback
- quercetin 500mg
- bromelain included
- vitamin C and zinc combo
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8
Quercetin LipoMicel matrix softgels, 60 count
Absorption-focused softgels: lipomicel matrix quercetin in softgel form for easier ingestion and delivery
Quercetin supplement with lipomicel matrix for enhanced absorption. Supports immune and heart health; easy to take as a daily softgel. Customer note: effective for immune function and absorption
- lipomicel matrix for absorption
- supports immune function
- heart and capillary health support
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9
Quercetin with vitamin C and zinc - 6 month supply
Long-supply immune option: quercetin combined with vitamin C and zinc formulated for ongoing immune support
Quercetin + vitamin C + zinc with bromelain for immune support. Easy to swallow and gentle on the stomach, with additional vitamin D3 noted by customers as value-added
- quercetin with bromelain
- includes vitamin C and zinc
- vegan, gluten-free, non-GMO
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10
Diosmin 500 with Horse Chestnut, Butcher's Broom & Hesperidin - Dietary Supplement
Circulatory multi-flavonoid formula: diosmin with horse chestnut, butcher's broom and hesperidin aimed at vein and vascular health
Dietary supplement with natural botanicals like diosmin, hesperidin, horse chestnut, red grape and butcher's broom. Supports general wellness and circulation; customers note effectiveness and quality
- combination of diosmin and hesperidin
- includes horse chestnut and butcher's broom
- plant-based antioxidants