IsoQuercetin
by Tomorrow's Nutrition Pro · capsule · 62 vegetable capsules
- On the market (NIH)
- UPC 8 50236 00454 5
- DSLD label 336300
- Serving 2 capsules
- 31 servings
IsoQuercetin by Tomorrow's Nutrition Pro lists 2 ingredients, 2 with an amount per serving of 2 capsules, such as 728 mg of SunActive IsoQ and 540 mg of vitamin C. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2025.
What is in IsoQuercetin?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| SunActive IsoQas Quercetinprovides equivalent 2000 mg of quercetin | 728 mg | Higher than 95% of 1,548 products listing quercetin (median 100 mg). | |
| Vitamin Cas Ascorbic Acid | 540 mg | 600% | Higher than 89% of 18,583 products listing vitamin C (median 100 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 336300 (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 728 mg of SunActive IsoQ (filed by NIH under quercetin) is higher than 95% of the 1,548 quercetin products that print an amount; 82 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.
- Quercetin- Ascorbate PowderDesigns for Health same ingredients
- C Extra + QuercetinNatural Factors same ingredients
- Quercetin PlusPrescribed Choice · off the market same ingredients
- Quercetin Plus Vitamin CVitamin World same ingredients
- Quercetin plus Vitamin CPhysioLogics · off the market same ingredients
- Quercetin Plus Vitamin CGood 'N Natural · 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
- Recommendations: Adults, as a dietary supplement, take two capsules daily. Can be taken with or without food, anytime of day.
- Warnings
- Warning: If pregnant, nursing or taking any prescription drugs, consult your healthcare practitioner prior to use.
- Do not use if safety seal is broken or missing.
- Keep out of reach of children.
- Allergens and what it does not contain
- Gluten free Non-Dairy Contains no: Artificial sweeteners, dairy, wheat or yeast.
- Storage
- Store in a cool dry place.
Source: label statements in DSLD label 336300.
What else is on the label?
Other ingredients: Cyclodextrin, Rhamnose, Cellulose.
How many labels does IsoQuercetin have?
One label is on file, entered on August 22, 2025.
- Label 336300 (current) Entered August 22, 2025 · on the market · 62 vegetable capsules · UPC 8 50236 00454 5
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Tomorrow's Nutrition Pro (distributor), Minneapolis, MN. All Tomorrow's Nutrition Pro products.