Quercetin 500
by ProCaps · capsule · 240 easy-to-swallow capsules
- Off the market since February 2022 (NIH)
- UPC 712545
- DSLD label 248108
- Serving 1 capsule
- 240 servings
Quercetin 500 by ProCaps lists 4 ingredients, 4 with an amount per serving of 1 capsule, such as 25 mg of vitamin C and 500 mg of quercetin phospholipid complex. Its current label entered the NIH Dietary Supplement Label Database on April 22, 2021.
What is in Quercetin 500?
Each row as the label prints it, per serving of 1 capsule. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Ascorbyl Palmitate, Calcium AscorbateVitamin C (Form: as Calcium Ascorbate, and Ascorbyl Palmitate) | 25 mg | 28% | 88% of 18,583 products listing vitamin C give more (median 100 mg). |
| Quercetin Phospholipid Complexas Phospholipids, Quercetin DihydrateQuercetin Phospholipid Complex (Form: 80% Phospholipids, 20% Quercetin Dihydrate) | 500 mg | Higher than 84% of 1,548 products listing quercetin (median 100 mg). | |
| Total Quercetin | 235 mg | ||
| Total Phospholipids | 135 mg | 71% of 34 products listing pospholipid (unspecified) give more (median 177.5 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 248108 (entered April 22, 2021), 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?
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 one serving 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 Quercetin 500's, rare ingredients counting for more.
- Resveratrol Reserve Cellular Longevity ComplexNature's Answer · off the market 2 shared, 41% alike
- Quercetin Plus Vitamin CVitamin World 2 shared, 41% alike
- Quercetin- Ascorbate PowderDesigns for Health 2 shared, 41% alike
- Quercetin PlusPrescribed Choice · off the market 2 shared, 41% alike
- Quercetin plus Vitamin CPhysioLogics · off the market 2 shared, 41% alike
- Quercetin Plus Vitamin CGood 'N Natural · off the market 2 shared, 41% alike
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 Consume one or more capsules daily with food or as recommended by your physician. This product is most effective as part of a healthy diet and active lifestyle. For questions about the use of this product call 800.332.7799.
- Allergens and what it does not contain
- Contains no additives of any kind Contains no milk, soy, yeast, corn, wheat, gluten, sodium, salt, sugar, cholesterol, color, preservative, common allergens or manufacturing additives.
Source: label statements in DSLD label 248108.
What else is on the label?
Other ingredients: Gelatin Capsule.
How many labels does Quercetin 500 have?
One label is on file, entered on April 22, 2021.
- Label 248108 (current) Entered April 22, 2021 · off the market February 4, 2022 · 240 easy-to-swallow capsules · UPC 712545
DSLD also links this label to: Quercetin 500 (image difference, same product), Quercetin 500 (image difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names ProCaps Labs (manufacturer), Henderson, NV. All ProCaps products.