PlainVitamins

non-nutrient/non-botanical

Flavonoid supplements

Half of the 2,343 flavonoid supplements in the NIH label database that print an amount list 50 mg or less per serving; the middle half list 25 mg to 100 mg (DSLD version 9.4.0, January 2026). The 30 products whose only supplement ingredient is flavonoid list a median of 1,000 mg.

Products listing it
2,9232,343 print an amount; 579 list it inside a blend without an amount
Median per serving
50 mgmiddle half 25 mg to 100 mg

How much flavonoid do supplements contain?

The median product lists 50 mg per serving. One in ten lists 10 mg or less, one in ten 250 mg or more. The amount printed most often is 100 mg (372 products).

Products by amount of flavonoid per serving

2,343 products, log scale; extreme 0.2% at each end left out of the drawing.

Flavonoid: products by amount per serving0.1 mg1 mg10 mg100 mg
Flavonoid: products by amount per serving0.1 mg1 mg3 mg10 mg100 mg
Flavonoid: products by amount per serving0.1 mg1 mg3 mg10 mg30 mg100 mg
Flavonoid: products by amount per serving0.1 mg0.3 mg1 mg3 mg10 mg30 mg100 mg300 mg
Flavonoid: products by amount per serving0.1 mg0.3 mg1 mg3 mg10 mg30 mg100 mg300 mg
The amounts printed most often
Amount per servingProductsFor example
100 mg372 Green Source (Radiance); Ultra Preventive Beta With Copper & Iron (Douglas Laboratories); Ultra Preventive Beta With Copper (Douglas Laboratories)
25 mg317 Iron Free Daily Multiple 50+ (Sundown Naturals); Mega Vita-Min (Radiance); Men's Multiple (Radiance Select)
50 mg293 Bilberry Extract Plus (Earth Wise Vitamins & Supplements); Maximum Anti-Oxidant Formula (Radiance); Teen Multiple (FemTeen Symmetry)
20 mg113 Cell Protector (GNC Preventive Nutrition); Men's (Rexall Sundown Naturalist); Active Woman's Multi (Vitabase)
200 mg106 Ester-C 500 mg With Citrus Bioflavoinds Timed Release (American Health); Ester-C 1000 mg (Vitabase); Natural Source Super C-1000 With Rose Hips, Citrus Bioflavonoids, Rutin, Hesperidin Complex And Acerola (Windmill)
10 mg100 Memorall (GNC Preventive Nutrition); Chewable C 500 mg Raspberry-Cherry (VitaCeutical Labs); Malic Acid + Magnesium Tablets (Douglas Laboratories)
60 mg92 Life Multi Complete (VitaCeutical Labs); Your Life Multi Green Souce (Nature's Bounty); Green Source Multivitamin & Minerals (Vitamin World)
30 mg91 Mega Vita-Gel (Vitamin World); Mega Vita Gel (Radiance); Mega Multi Vitamin (Indiana Botanic Gardens)
250 mg73 Ester-C 500 Plus Bioflavonoids (Bluebonnet); Pomegranate Fruit Extract 250 mg (Basic Organics); Flavomax (Shaklee)
500 mg72 Grape Seed Extract 50 mg (Nature's Bounty); Bio C Complete (VitaCeutical Labs); C Extra 500 mg Plus 500 mg Bioflavonoids (Natural Factors)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most flavonoid?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 25 mg; those entered in 2025, 75 mg.

Median flavonoid per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
20118625 mg
201225955 mg
201323650 mg
20148750 mg
201512150 mg
201614650 mg
201713450 mg
20187850 mg
20197055 mg
202019350 mg
202119960 mg
202215150 mg
202319937 mg
202421360 mg
202517175 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing flavonoid by DSLD product type

Flavonoid by product typeOther Combinations2,220Botanical with Nutrients55Non-Nutrient/Non-Botanical37Botanical16Multi-Vitamin and Mineral (MVM)9Vitamin5Fiber and Other Nutrients1
Flavonoid by product typeOther Combinations2,220Botanical with Nutrients55Non-Nutrient/Non-Botanical37Botanical16Multi-Vitamin and Mineral (MVM)9Vitamin5Fiber and Other Nutrients1
Flavonoid by product typeOther Combinations2,220Botanical with Nutrients55Non-Nutrient/Non-Botanical37Botanical16Multi-Vitamin and Mineral (MVM)9Vitamin5Fiber and Other Nutrients1
Flavonoid by product typeOther Combinations2,220Botanical with Nutrients55Non-Nutrient/Non-Botanical37Botanical16Multi-Vitamin and Mineral (MVM)9Vitamin5Fiber and Other Nutrients1
Flavonoid by product typeOther Combinations2,220Botanical with Nutrients55Non-Nutrient/Non-Botanical37Botanical16Multi-Vitamin and Mineral (MVM)9Vitamin5Fiber and Other Nutrients1

Brands listing it most: Douglas Laboratories (185), Nature's Way (92), Nature's Plus (83), Rainbow Light (43), NOW (38), Country Life (34), VitaCeutical Labs (33), Vitamin World (30), Puritan's Pride (30), Vitamer Laboratories (28).

Every product listing flavonoid

2,923 products, A to Z by name (page 42 of 59), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?