PlainVitamins

Optimized Quercetin 250 mg

by Life Extension · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 7 37870 13096 3
  • DSLD label 328615
  • Serving 1 vegetarian capsule
  • 60 servings

Optimized Quercetin 250 mg by Life Extension lists 6 ingredients, 3 with an amount per serving of 1 vegetarian capsule, such as 30 mg of vitamin C, 250 mg of quercetin and 60 mg of camu camu berry extract; 3 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on May 21, 2025.

What is in Optimized Quercetin 250 mg?

Each row as the label prints it, per serving of 1 vegetarian 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).

Optimized Quercetin 250 mg: Supplement Facts rows against the market (DSLD label 328615, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid, Camu Camu Berry Extract30 mg33%Vitamin C in Optimized Quercetin 250 mg against 18,583 products30 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg30 mg

83% of 18,583 products listing vitamin C give more (median 100 mg). Per day at the most servings: 60 mg.

Quercetinas Quercetin Dihydrate250 mgQuercetin in Optimized Quercetin 250 mg against 1,548 products250 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.250 mg

Higher than 71% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 500 mg.

Optimized Food Blend210 mg
Bitter Orange Bioflavonoidsas Bitter Orange, Bitter Orangein the blend, no amount given
Apple fruit extractin the blend, no amount given
Onion bulb extractin the blend, no amount given
Camu Camu Berry Extractwildcrafted60 mgCamu Camu in Optimized Quercetin 250 mg against 101 products60 mg per serving; the middle half of products list 100 mg to 700 mg, the median 300 mg.60 mg

86% of 101 products listing camu camu give more (median 300 mg). Per day at the most servings: 120 mg.

Source: NIH ODS Dietary Supplement Label Database, label 328615 (entered May 21, 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; 3 ingredients sit inside a blend, so their amounts cannot be compared.

The NIH database records 1 to 2 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?

The products whose ingredient lists overlap most with Optimized Quercetin 250 mg's, rare ingredients counting for more.

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
Directions: Take one (1) capsule once or twice daily, or as recommended by a healthcare practitioner.
Warnings
Read the entire label and follow the directions carefully.
Warnings: Keep out of reach of children.
Do not exceed recommended dose. Do not purchase if outer seal is damaged.
Consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
To report a serious adverse event or obtain product information, contact 1-866-280-2852.
Allergens and what it does not contain
Gluten free Non GMO LE Certified
Storage
Store tightly closed in a cool, dry place.

Source: label statements in DSLD label 328615.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Cellulose, Maltodextrin, Silica, Stearate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non GMO LE Certified.

How many labels does Optimized Quercetin 250 mg have?

6 labels are on file under this name since April 22, 2016: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 328615 (current) Entered May 21, 2025 · on the market · 60 vegetarian capsules · UPC 7 37870 13096 3
  2. Label 231790 Entered August 23, 2020 · off the market July 14, 2020 · 60 vegetarian capsules · UPC 7 37870 13096 3
  3. Label 231784 Entered August 23, 2020 · off the market August 9, 2023 · 60 vegetarian capsules · UPC 7 37870 13096 3
  4. Label 73936 Entered May 24, 2017 · off the market July 14, 2020 · 60 vegetarian capsules · UPC 7 37870 13096 3
  5. Label 59101 Entered April 22, 2016 · off the market August 24, 2016 · 60 vegetarian capsules · UPC 7 37870 13096 3
  6. Label 59098 Entered April 22, 2016 · off the market April 8, 2016 · 60 vegetarian capsules · UPC 7 37870 13096 3

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

Who makes it?

The label names Quality Supplements and Vitamins, Inc. (distributor), Ft. Lauderdale, FL. All Life Extension products.

Where next?