Quercetin Complex
by Thorne · capsule · 60 capsules
- On the market (NIH)
- UPC 6 93749 33202 2
- DSLD label 328840
- Serving 1 capsule
- 60 servings
Quercetin Complex by Thorne lists one ingredient: 100 mg of bromelain per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2025.
What is in Quercetin Complex?
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 |
|---|---|---|---|
| Quercetin Phytosome Complexas Phospholipids, Sophora japonica Flower Extract | 250 mg | ||
| Bromelain | 100 mg | Higher than 55% of 1,337 products listing bromelain (median 50 mg). Per day at the most servings: 300 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 328840 (entered February 23, 2025), 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 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?
6 products list the very same ingredients; the nearest amounts come first.
- QuercenaseThorne · off the market same ingredients
- Bromelain 100 mgSwanson same ingredients
- BromelainFoster Regal same ingredients
- BromelainDC same ingredients
- BromelainWonder Laboratories same ingredients
- Bromelain 240 GDU 200 mgSwanson Premium Brand · off the market same ingredients
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 1 capsule three times daily or as recommended by your health-care practitioner.
- Warnings
- Tamper evident: Use only if bottle is sealed.
- If pregnant, consult your health-care practitioner before using this product.
- Allergens and what it does not contain
- Gluten free
- Storage
- Store tightly sealed in a cool, dry place.
Source: label statements in DSLD label 328840.
What else is on the label?
Other ingredients: Hypromellose, Microcrystalline Cellulose, Leucine, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): NSF Contents Certified. Listed with: NSF certified (contents or GMP) (a seal is the label's claim; the certifier's own list confirms it).
How many labels does Quercetin Complex have?
2 labels are on file under this name since February 22, 2024: other sizes, label designs and reformulations. The current one leads this page.
- Label 328840 (current) Entered February 23, 2025 · on the market · 60 capsules · UPC 6 93749 33202 2
- Label 306279 Entered February 22, 2024 · off the market October 22, 2024 · 60 capsules · UPC 6 93749 33202 2
DSLD also links this label to: Quercenase (image difference, same product), Quercenase (image difference, same product), Quercenase (image difference, same product), Quercenase (image difference, same product), Quercenase (image difference, same product), Quercenase (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 Thorne Research, Inc. (manufacturer). All Thorne products.