Maximum-Strength Quercetin 800 mg
by Swanson Ultra · capsule · 30 veggie capsules
- On the market (NIH)
- UPC 0 87614 02889 7
- DSLD label 181032
- Serving 1 veggie capsule
Maximum-Strength Quercetin 800 mg by Swanson Ultra lists one ingredient: 800 mg of quercetin per serving of 1 veggie capsule. Its current label entered the NIH Dietary Supplement Label Database on September 21, 2018.
What is in Maximum-Strength Quercetin 800 mg?
Each row as the label prints it, per serving of 1 veggie 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 |
|---|---|---|---|
| Quercetinas Quercetin anhydrousQuercetin (Form: from Quercetin anhydrous (Form: from Dimorphandra mollis PlantPart: dried pods Genus: Dimorphandra Species: mollis)) | 800 mg | Higher than 95% of 1,548 products listing quercetin (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 181032 (entered September 21, 2018), 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:
- Its 800 mg of quercetin is higher than 95% of the 1,548 quercetin products that print an amount; 60 list more.
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?
6 products list the very same ingredients; the nearest amounts come first.
- Pure QuercetinDoNotAge.org same ingredients
- QuercetinEarthborn Elements same ingredients
- High Potency Quercetin 650 mgSwanson Premium Brand · off the market same ingredients
- Quercetin 1000 mgGNC Preventive Nutrition same ingredients
- Super Quercetin 500 mgSuperSmart · off the market same ingredients
- QuercetinDoctor Recommended Supplements 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: As a dietary supplement, take one veggie capsule per day with water.
- Warnings
- Do not use if seal is broken.
- Keep out of reach of children.
- Storage
- Store in a cool, dry place.
Source: label statements in DSLD label 181032.
What else is on the label?
Other ingredients: Hypromellose, Magnesium Stearate, Silica.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): V Vegetarian formula Guaranteed purity & potency.
How many labels does Maximum-Strength Quercetin 800 mg have?
One label is on file, entered on September 21, 2018.
- Label 181032 (current) Entered September 21, 2018 · on the market · 30 veggie capsules · UPC 0 87614 02889 7
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Swanson Health Products (distributor), Fargo, ND. All Swanson Ultra products.