Bioflavonoid Complex

by Source Naturals · tablet or pill · 30 tablets

  • On the market (NIH)
  • UPC 0 21078 00988 7
  • DSLD label 213732
  • Serving 1 tablet

Bioflavonoid Complex by Source Naturals lists 9 ingredients, 9 with an amount per serving of 1 tablet, such as 250 mg of vitamin C, 150 mg of hawthorn berry extract, 150 mg of rosemary leaf extract and 100 mg of quercetin. Its current label entered the NIH Dietary Supplement Label Database on February 26, 2020.

What is in Bioflavonoid Complex?

Each row as the label prints it, per serving of 1 tablet. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Bioflavonoid Complex: Supplement Facts rows against the market (DSLD label 213732, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid250 mg417%Vitamin C in Bioflavonoid Complex against 18,583 products250 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg250 mg

Higher than 68% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 750 mg.

Hawthorn berry extract150 mgHawthorn in Bioflavonoid Complex against 589 products150 mg per serving; the middle half of products list 75 mg to 400 mg, the median 200 mg.150 mg

57% of 589 products listing hawthorn give more (median 200 mg). Per day at the most servings: 450 mg.

Rosemary leaf extract150 mgRosemary in Bioflavonoid Complex against 332 products150 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.150 mg

Higher than 77% of 332 products listing rosemary (median 50 mg). Per day at the most servings: 450 mg.

Quercetin100 mgQuercetin in Bioflavonoid Complex against 1,548 products100 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.100 mg

40% of 1,548 products listing quercetin give more (median 100 mg). Per day at the most servings: 300 mg.

Silymarinas Milk Thistle seed extractSilymarin (Form: from Milk Thistle seed extract PlantPart: seed)50 mgSilymarin in Bioflavonoid Complex against 208 products50 mg per serving; the middle half of products list 63.75 mg to 203 mg, the median 116 mg.50 mg

81% of 208 products listing silymarin give more (median 116 mg). Per day at the most servings: 150 mg.

Grape seed extractGrape seed extract (Alt. Name: Proanthodyn) PlantPart: seed Note: with a Procyanidolic Value of 9525 mgGrape in Bioflavonoid Complex against 1,900 products25 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.25 mg

69% of 1,900 products listing grape give more (median 50 mg). Per day at the most servings: 75 mg.

Green Tea leaf extractas PolyphenolsGreen Tea leaf extract (Form: 95% Polyphenols) PlantPart: leaf25 mgGreen Tea in Bioflavonoid Complex against 2,595 products25 mg per serving; the middle half of products list 50 mg to 250 mg, the median 100 mg.25 mg

86% of 2,595 products listing green tea give more (median 100 mg). Per day at the most servings: 75 mg.

Ginkgo leaf ext.as Flavone Glycosides, Terpene LactonesGinkgo leaf ext. (Form: 24% Flavone Glycosides, & 6% Terpene Lactones) PlantPart: leaf Genus: Ginkgo20 mgGinkgo in Bioflavonoid Complex against 1,339 products20 mg per serving; the middle half of products list 30 mg to 120 mg, the median 60 mg.20 mg

83% of 1,339 products listing ginkgo give more (median 60 mg). Per day at the most servings: 60 mg.

Bilberry fruit extractas AnthocyanosidesBilberry fruit extract (Form: 32% Anthocyanosides) PlantPart: fruit12 mgBilberry in Bioflavonoid Complex against 896 products12 mg per serving; the middle half of products list 20 mg to 100 mg, the median 50 mg.12 mg

85% of 896 products listing bilberry give more (median 50 mg). Per day at the most servings: 36 mg.

Source: NIH ODS Dietary Supplement Label Database, label 213732 (entered February 26, 2020), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 86% of the 2,595 products that print an amount of green tea list more than its 25 mg of green tea (median 100 mg).

The NIH database records 1 to 3 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

The products whose ingredient lists overlap most with Bioflavonoid Complex's, rare ingredients counting for more.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested Use: 1 tablet, 1 to 3 times daily.
Warnings
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.

Source: label statements in DSLD label 213732.

What else is on the label?

Other ingredients: Sorbitol, Stearic Acid, modified Cellulose Gum, Silica.

How many labels does Bioflavonoid Complex have?

One label is on file, entered on February 26, 2020.

  1. Label 213732 (current) Entered February 26, 2020 · on the market · 30 tablets · UPC 0 21078 00988 7

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?