Quercetin Complex 625 mg
by Mason Natural · tablet or pill · 60 tablets
- On the market (NIH)
- UPC 3 11845 18475 7
- DSLD label 336423
- Serving 1 tablet
- 60 servings
Quercetin Complex 625 mg by Mason Natural lists 6 ingredients, 4 with an amount per serving of 1 tablet, such as 25 mg of calcium and 625 mg of quercetin complex; 2 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2025.
What is in Quercetin Complex 625 mg?
Each row as the label prints it, per serving of 1 tablet. 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 |
|---|---|---|---|
| Calciumas Tricalcium Phosphate | 25 mg | 2% | 88% of 17,831 products listing calcium give more (median 115 mg). |
| Quercetin Complex | 625 mg | Higher than 94% of 1,548 products listing quercetin (median 100 mg). | |
| Vitamin Cas Ascorbic Acid | 50 mg | 56%* | 77% of 18,583 products listing vitamin C give more (median 100 mg). |
| Quercetin Dihydrateas Dimorphandra mollis | 500 mg | ||
| Citrus Bioflavonoid | no amount given | ||
| Apple Pectin | no amount given |
* % Daily Value computed from the printed amount and the FDA Daily Value (21 CFR 101.9); the label prints none for that row.
Source: NIH ODS Dietary Supplement Label Database, label 336423 (entered August 22, 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?
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 625 mg of quercetin is higher than 94% of the 1,548 quercetin products that print an amount; 87 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?
The products whose ingredient lists overlap most with Quercetin Complex 625 mg's, rare ingredients counting for more.
- Ascrobplex 1000Douglas Laboratories · off the market 4 shared, 59% alike
- Buffered Vitamin C 1000 mgMartin Avenue Pharmacy 4 shared, 59% alike
- Ascorbplex 1000 Buffered Vitamin CDouglas Laboratories 4 shared, 59% alike
- Quercetin 250 mgBIOVEA 3 shared, 59% alike
- Super Vitamin CNature's Lab 3 shared, 59% alike
- Quercetin ComplexNatrol 3 shared, 59% 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
- 1 per day
- Directions: Adults - Take one tablet daily, preferably with food, as a dietary supplement.
- Warnings
- Caution: If you are pregnant, nursing, taking any medications or have any medical condition, consult your physician before use.
- Discontinue use and consult your physician if any adverse reactions occur. Tamper-evident seal: Do not use product if seal appears tampered with.
- Keep out of reach of children.
- Allergens and what it does not contain
- Guaranteed no added: Dairy, Egg, Fish, Crustacean Shellfish, Tree Nuts, Peanuts, Wheat, Soy, Sesame, Sugar, Starch, Yeast, Corn, Fragrance, Artificial Colors or Flavors, Preservatives, Animal Products. Sodium Free.
- Gluten free Soy free
- Storage
- Store in a dry place under controlled room temperature: 20 degrees – 25 degrees C (68 degrees – 77 degrees F).
Source: label statements in DSLD label 336423.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Cellulose, Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Mason guarantee Laboratory Tested cGMP Certified Good Manufacturing Practice Certified 5 stars.
How many labels does Quercetin Complex 625 mg have?
One label is on file, entered on August 22, 2025.
- Label 336423 (current) Entered August 22, 2025 · on the market · 60 tablets · UPC 3 11845 18475 7
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Mason Vitamins, Inc. (distributor), Miami Lakes, FL. All Mason Natural products.