PlainVitamins

Quercetin Plus

by Bernard Jensen's · capsule · 60 capsules

  • On the market (NIH)
  • UPC 7 26434 55280 8
  • DSLD label 318472
  • Serving 2 capsules
  • 30 servings

Quercetin Plus by Bernard Jensen's lists 4 ingredients, 4 with an amount per serving of 2 capsules, such as 340 mg of vitamin C, 22 mg of zinc, 400 mg of quercetin dihydrate and 80 mg of bromelain. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2024.

What is in Quercetin Plus?

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).

Quercetin Plus: Supplement Facts rows against the market (DSLD label 318472, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid340 mg378%Vitamin C in Quercetin Plus against 18,583 products340 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg340 mg

Higher than 79% of 18,583 products listing vitamin C (median 100 mg).

Zincas Zinc Bisglycinate Chelate22 mg200%Zinc in Quercetin Plus against 13,186 products22 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg22 mg

Higher than 83% of 13,186 products listing zinc (median 11 mg).

Quercetin Dihydrateas Sophora japonica400 mgQuercetin in Quercetin Plus against 1,548 products400 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.400 mg

Higher than 83% of 1,548 products listing quercetin (median 100 mg).

Bromelainas Ananas comosus80 mgBromelain in Quercetin Plus against 1,337 products80 mg per serving; the middle half of products list 25 mg to 200 mg, the median 50 mg.80 mg

Higher than 54% of 1,337 products listing bromelain (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 318472 (entered September 25, 2024), 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 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?

1 product lists the very same ingredients; the nearest amounts come first.

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: Take 2 capsules, preferably on an empty stomach or with food if you have a sensitive stomach.
Warnings
If you are pregnant, nursing or taking any medication, consult with a physician before taking this product.
Do not use if safety seal is damaged or missing.
Keep out of reach of children.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 318472.

What else is on the label?

Other ingredients: Hypromellose.

How many labels does Quercetin Plus have?

One label is on file, entered on September 25, 2024.

  1. Label 318472 (current) Entered September 25, 2024 · on the market · 60 capsules · UPC 7 26434 55280 8

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

Who makes it?

The label names Bernard Jensen Products (manufacturer), Chula Vista, CA. All Bernard Jensen's products.

Where next?