PlainVitamins

Quercetin Plus

by True Botanica · capsule · 60 capsules

  • On the market (NIH)
  • DSLD label 336239
  • Serving 2 capsules
  • 30 servings

Quercetin Plus by True Botanica lists 6 ingredients, 4 with an amount per serving of 2 capsules, such as 500 mg of quercetin, 100 mg of nettle leaf extract and 15 mg of fenugreek, powder; 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 Plus?

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).

Quercetin Plus: Supplement Facts rows against the market (DSLD label 336239, January 2026 release)
IngredientAmount% DVAmong products listing it
Quercetinas Quercetin Dihydrate500 mgQuercetin in Quercetin Plus against 1,548 products500 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.500 mg

Higher than 84% of 1,548 products listing quercetin (median 100 mg).

Nettle Leaf Extract100 mgStinging Nettle in Quercetin Plus against 710 products100 mg per serving; the middle half of products list 50 mg to 300 mg, the median 120 mg.100 mg

51% of 710 products listing stinging nettle give more (median 120 mg).

Silicastandardized for 1%1 mgSilicon in Quercetin Plus against 1,220 products1 mg per serving; the middle half of products list 2 mg to 10.5 mg, the median 4 mg.1 mg

88% of 1,220 products listing silicon give more (median 4 mg).

Fenugreek, Powder15 mgFenugreek in Quercetin Plus against 628 products15 mg per serving; the middle half of products list 100 mg to 600 mg, the median 300 mg.15 mg

96% of 628 products listing fenugreek give more (median 300 mg).

BD Oak Bark Pentas Mix10 mg
Lemon/Quince Pentas Mix10 mg
Lemonin the blend, no amount given
Quincein the blend, no amount given

Source: NIH ODS Dietary Supplement Label Database, label 336239 (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:

  • 88% of the 1,220 products that print an amount of silicon list more than its 1 mg of silica (filed by NIH under silicon) (median 4 mg).
  • 96% of the 628 products that print an amount of fenugreek list more than its 15 mg of fenugreek (median 300 mg).

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.

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
Best results if taken with meals.
Suggested usage: Two capsules once daily, or as suggested by your health care provider.
Warnings
Contact your health care provider before using this product if you are pregnant, lactating or have other medical concerns or compatibility issues.
Do not use this product if allergies to the listed ingredients are known to exist or if any adverse effects result after taking the first dose.
This product contains a desiccant package, which should not be eaten.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, sesame, or soybeans. Gluten free.
Storage
This product contains a desiccant package, which should not be eaten. Keep desiccant in the bottle until all tablets have been taken.

Source: label statements in DSLD label 336239.

What else is on the label?

Other ingredients: Cellulose, Inulin, Powder, Magnesium Stearate, Silica.

How many labels does Quercetin Plus have?

One label is on file, entered on August 22, 2025.

  1. Label 336239 (current) Entered August 22, 2025 · on the market · 60 capsules

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

Who makes it?

The label names True Botanica, LLC (distributor), Hartland, WI. All True Botanica products.

Where next?