Silymarin

by NOW · powder · 4 oz.

  • On the market (NIH)
  • UPC 7 33739 04788 5
  • DSLD label 206176
  • Serving 0.125 tsp (approx. 0.35 g)
  • 323 servings

Silymarin by NOW lists one ingredient: 350 mg of milk thistle extract per serving of 0.125 tsp. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2019.

What is in Silymarin?

Each row as the label prints it, per serving of 0.125 tsp. 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).

Silymarin: Supplement Facts rows against the market (DSLD label 206176, January 2026 release)
IngredientAmount% DVAmong products listing it
Milk Thistle extractas Silymarin FlavonoidsMilk Thistle extract (Form: standardized to 280 mg Silymarin Flavonoids Note: equivalent 80%) PlantPart: fruit/seeds Genus: Silybum Species: marianum350 mgMilk Thistle in Silymarin against 1,277 products350 mg per serving; the middle half of products list 90 mg to 300 mg, the median 175 mg.350 mg

Higher than 80% of 1,277 products listing milk thistle (median 175 mg).

Source: NIH ODS Dietary Supplement Label Database, label 206176 (entered August 23, 2019), 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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.

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 Usage: Take 1/8 level teaspoon daily in juice or water, with food. Do not exceed recommended dose.
Warnings
Do not exceed recommended dose.
Caution: For adults only.
Not recommended for pregnant/nursing women. Consult physician if taking medication, or have a medical condition especially gall bladder dysfunction).
Keep out of reach of children.
Do not eat freshness packet enclosed.
Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO
Not manufactured with yeast, wheat, gluten, soy, corn, milk, egg, fish, shellfish or tree nut ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 206176.

What else is on the label?

Other ingredients: None.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Non-GMO Triangle K; GMP Quality Assured.

How many labels does Silymarin have?

3 labels are on file under this name since December 23, 2011: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 206176 (current) Entered August 23, 2019 · on the market · 4 oz. · UPC 7 33739 04788 5
  2. Label 69982 Entered January 25, 2017 · off the market December 6, 2018 · 4 oz. · UPC 7 33739 04788 5
  3. Label 2841 Entered December 23, 2011 · off the market August 9, 2012 · 100 vcaps(R) · UPC 7 33739 04739 7

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

Who makes it?

The label names NOW Foods (distributor), Bloomingdale, IL. All NOW products.

Where next?