Best Flavonoid Antioxidant Supplements for Daily Immune Support (2026)
We ranked supplements by quercetin form and dose, supporting cofactors (vitamin C, zinc, bromelain), ingredient transparency, and value per serving
The Verdict
- Best Overall: Quercetin with bromelain, vitamin C and zinc - 1215mg per serving — Best for high-dose support: multi-ingredient 1215mg per serving blend with vitamin C, zinc and bromelain for broad immune support
- Best Value: Quercetin 500mg with Bromelain | Bioactive Phytosome Complex — Best for enhanced absorption: 500mg quercetin with a bioactive phytosome complex plus bromelain for improved uptake
This roundup compares daily flavonoid antioxidant supplements focused on immune support, highlighting formulations, delivery matrices, and complementary nutrients. Picks were chosen for ingredient transparency, clinically relevant quercetin formats, and overall value across brands
Top Picks
-
1
Best Overall Quercetin with bromelain, vitamin C and zinc - 1215mg per serving
Best for high-dose support: multi-ingredient 1215mg per serving blend with vitamin C, zinc and bromelain for broad immune support
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
-
2
Best Value Quercetin 500mg with Bromelain | Bioactive Phytosome Complex
Best for enhanced absorption: 500mg quercetin with a bioactive phytosome complex plus bromelain for improved uptake
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
-
3
Solaray Mega Quercetin with Bromelain, Vitamin C and Bioflavonoids
Best classic formula: combines quercetin, bromelain, vitamin C and bioflavonoids in a familiar formulation for daily use
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
-
4
Quercetin with bromelain, vitamin C, zinc & nettle
Best for multi‑factor support: quercetin paired with bromelain, vitamin C, zinc and nettle for broader nutrient coverage
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
-
5
Quercetin LipoMicel matrix softgels, 60 count
Best for delivery tech: LipoMicel softgels use a specialized matrix aimed at improving quercetin bioavailability and tolerability
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