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Antioxidant

Citrus Bioflavonoids

Also known as: Bioflavonoids, Hesperidin, Rutin, Quercetin

B
Evidence

Plant compounds from citrus fruits that enhance vitamin C absorption and provide antioxidant, anti-inflammatory, and vascular support benefits.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Vitamin C enhancement
  • Vascular health
  • Capillary strength
  • Antioxidant support

How it works

  • Enhance vitamin C absorption and retention
  • Strengthen capillary walls
  • Antioxidant and anti-inflammatory effects
  • Support collagen synthesis

Dosage

Typical range
250-1000 mg daily
Timing
With vitamin C
With food
Optional
Duration
Safe long-term
Special populations
Those taking vitamin C supplements

Forms

  • Complex/blend
  • Hesperidin
  • Rutin

Safety

Common side effects

  • Generally well tolerated

Contraindications

  • None known

Products containing Citrus Bioflavonoids

Top-scoring supplements in our catalog that list Citrus Bioflavonoids on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Thorne
Quercetin Phytosome
92
Thorne
Quercetin Complex
90
Thorne
Advanced Nutrients
88
Thorne
Pre-Workout Elite
88
See all products →

Evidence notes

Synergistic with vitamin C; moderate evidence for vascular health

Grade B: Some human trials support key claims; further confirmation needed.

Cited research for Citrus Bioflavonoids

Clinical studies referenced across Formulate guides that mention citrus bioflavonoids. Each links to the full study page with PubMed source + the guides that cite it.

Related in Antioxidant

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.