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.
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).
- Citrus Bioflavonoid Complex 1000 mgVitabase1,000 mg
- Citrus Bioflavonoids 1000 mgBronson1,000 mg
- Citrus Bioflavonoids Complex 1000 mgMartin Avenue Pharmacy1,000 mg
- Citrus Bioflavonoids 1000 mgVitamin World1,000 mg
- Flavonoid 1,000DaVinci Laboratories Of Vermont1,000 mg
- Citrus Bioflavonoid Complex 1000 mgSolgar1,000 mg
- Quiet EarIndiana Botanic Gardens1,000 mg
- Bioflavonoids 1,000 mgNature's Life1,000 mg
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.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 86 | 25 mg |
| 2012 | 259 | 55 mg |
| 2013 | 236 | 50 mg |
| 2014 | 87 | 50 mg |
| 2015 | 121 | 50 mg |
| 2016 | 146 | 50 mg |
| 2017 | 134 | 50 mg |
| 2018 | 78 | 50 mg |
| 2019 | 70 | 55 mg |
| 2020 | 193 | 50 mg |
| 2021 | 199 | 60 mg |
| 2022 | 151 | 50 mg |
| 2023 | 199 | 37 mg |
| 2024 | 213 | 60 mg |
| 2025 | 171 | 75 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing flavonoid by DSLD product type
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 9 of 59), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Buffered C with BioflavonoidsSwanson Premium Brand · off the market200 mg
- Buffered C-1000 ComplexNOW250 mg
- Buffered C-ComplexThe Vitamin Shoppe55 mg
- Buffered C-Complex PowderThe Vitamin Shoppe250 mg
- Buffered C-Complex PowderNOW200 mg
- Buffered Vitamin C + Citrus BioflavonoidsJarrow Formulas250 mg
- Buffered Vitamin C + Citrus Bioflavonoids 750 mgJarrow Formulas · off the market250 mg
- Buffered Vitamin C 1,000 mgCountry Life150 mg
- Buffered Vitamin C 1,250 mg w/BioflavonoidsWonder Laboratories100 mg
- Buffered Vitamin C 1000Vinco120 mg
- Buffered Vitamin C 1000 mgMartin Avenue Pharmacy100 mg
- Buffered Vitamin C 1000 mgUniversal Nutrition / Universal Naturals110 mg
- Buffered Vitamin C 1000 mgMetabolic Maintenance150 mg
- Buffered Vitamin C 1000 mgBluebonnet100 mg
- Buffered Vitamin C 2500 mg w/BioflavonoidsWonder Labs · off the market500 mg
- Buffered Vitamin C 500 mgWhole Foods20 mg
- Buffered Vitamin C 500 mgBluebonnet250 mg
- Buffered Vitamin C 500 mgCountry Life100 mg
- Buffered Vitamin C Chewable 485 mg Natural Orange FlavorSolaray20 mg
- Buffered Vitamin C Chewable 500 mg Natural Orange FlavorSolaray · off the market20 mg
- Buffered Vitamin C with BioflavonoidsSwanson200 mg
- CSwanson200 mg
- C - 1000 TrNutri-West110 mg
- C 1,000 mgSwanson200 mg
- C 1,000 mg plus Bioflavonoids & Wild Rose HipsNature's Truth20 mg
- C 1000 mgThompson10 mg
- C 1000 mgKirkland Signature100 mg
- C 1000 mg + Rose Hips & BioflavonoidsMason Naturalin a blend
- C 1000 mg Plus Natural Rose HipsSundown Naturalistin a blend
- C 500 mgCVS Health · off the market25 mg
- C 500 mg "Tangy" Orange MeltsSuperior Sourcein a blend
- C 500 mg plus Bioflavonoids & Wild Rose HipsNature's Truth35 mg
- C 500 mg Plus Natural Rose HipsSundown Naturalist25 mg
- C 500 mg with BioflavonoidsNatural Grocers by Vitamin Cottage50 mg
- C 500 mg with Rose Hips and BioflavonoidsMason Naturalin a blend
- C Buffered with BioflavonoidsProgressive Professional from Progressive Laboratories50 mg
- C Extra 500 mg Plus 250 mg BioflavonoidsNatural Factors250 mg
- C Extra 500 mg Plus 500 mg BioflavonoidsNatural Factors500 mg
- C From NaturePurium Health Products300 mg
- C From NaturePurium300 mg
- C Gummies 250 mg Orange Flavored GummiesNature's Bountyin a blend
- C One GramThompson30 mg
- C Shield 500 mg With Echinacea & ZincNature's Gifts · off the market50 mg
- C' PlusKlaire Labs · off the market224 mg
- C-1,000 mg CapsVitamin Discount Center · off the market50 mg
- C-1000OL Olympian Labs · off the market100 mg
- C-1000Source Naturals Wellness100 mg
- C-1000 1000 mgBest Naturalsin a blend
- C-1000 Buffered CNOW · off the market250 mg
- C-1000 Buffered C With 250 mg BioflavonoidsNOW · off the market250 mg