PlainVitamins

Vitamin C with Quercetin

by Integrative Therapeutics · capsule · 180 capsules

  • On the market (NIH)
  • UPC 8 71791 00222 7
  • DSLD label 270097
  • Serving 2 capsules
  • 90 servings

Vitamin C with Quercetin by Integrative Therapeutics lists 3 ingredients, 3 with an amount per serving of 2 capsules, such as 450 mg of vitamin C, 250 mg of quercetin dihydrate and 125 mg of citrus bioflavonoid complex, beside 1 Nutrition Facts row (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on January 23, 2023.

What is in Vitamin C with Quercetin?

Each row as the label prints it, per serving of 2 capsules. 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).

Vitamin C with Quercetin: Supplement Facts rows against the market (DSLD label 270097, January 2026 release)
IngredientAmount% DVAmong products listing it
Total Carbohydratesless than 1 g1%
Vitamin Cas Ascorbic Acid450 mg500%Vitamin C in Vitamin C with Quercetin against 18,583 products450 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg450 mg

Higher than 80% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 1,350 mg.

Quercetin Dihydrate250 mgQuercetin in Vitamin C with Quercetin against 1,548 products250 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.250 mg

Higher than 71% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 750 mg.

Citrus Bioflavonoid Complex125 mgFlavonoid in Vitamin C with Quercetin against 2,343 products125 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.125 mg

Higher than 79% of 2,343 products listing flavonoid (median 50 mg). Per day at the most servings: 375 mg.

Source: NIH ODS Dietary Supplement Label Database, label 270097 (entered January 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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 Vitamin C with Quercetin'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
Recommendation: Take 2 capsules one to three times daily, or as recommended by a healthcare professional.
Warnings
Keep out of reach of children.
Safety sealed with inner seal. Do not use if seal is broken or missing.
If you are pregnant, nursing, or taking prescription drugs, consult your healthcare professional before use.
Allergens and what it does not contain
Contains no wheat, gluten, soy, dairy products, ingredients of animal origin, or artificial colors, or flavors.
Storage
Keep tightly closed. Store at room temperature. Avoid excessive heat and direct sunlight.

Source: label statements in DSLD label 270097.

What else is on the label?

Other ingredients: Cellulose, plant-derived Capsule, Calcium Laurate, Silica.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Quality Global Sourcing Bottled & Tested in the USA.

How many labels does Vitamin C with Quercetin have?

4 labels are on file under this name since September 22, 2016: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 270097 (current) Entered January 23, 2023 · on the market · 180 capsules · UPC 8 71791 00222 7
  2. Label 269626 Entered July 21, 2022 · on the market · 180 capsules · UPC 8 71791 00222 7
  3. Label 223322 Entered June 24, 2020 · off the market November 30, 2021 · 180 veg capsules · UPC 8 71791 00222 7
  4. Label 65279 Entered September 22, 2016 · off the market February 28, 2020 · 180 veg capsules · UPC 8 71791 00222 7

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

Who makes it?

The label names Integrative Therapeutics, LLC (distributor), Green Bay, WI. All Integrative Therapeutics products.

Where next?