PlainVitamins

Milk Thistle

by Life Extension · capsule · 60 vegetarian capsules

  • On the market (NIH)
  • UPC 7 37870 15226 2
  • DSLD label 231939
  • Serving 1 vegetarian capsule

Milk Thistle by Life Extension lists 4 ingredients, 4 with an amount per serving of 1 vegetarian capsule, such as 750 mg of milk thistle extract. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.

What is in Milk Thistle?

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).

Milk Thistle: Supplement Facts rows against the market (DSLD label 231939, January 2026 release)
IngredientAmount% DVAmong products listing it
Milk Thistle extractMilk Thistle extract PlantPart: seed Note: providing750 mgMilk Thistle in Milk Thistle against 1,277 products750 mg per serving; the middle half of products list 90 mg to 300 mg, the median 175 mg.750 mg

Higher than 94% of 1,277 products listing milk thistle (median 175 mg).

Silymarin600 mgSilymarin in Milk Thistle against 208 products600 mg per serving; the middle half of products list 63.75 mg to 203 mg, the median 116 mg.600 mg

Higher than over 99% of 208 products listing silymarin (median 116 mg).

Silibinins225 mgSilybin in Milk Thistle against 42 products285 mg per serving; the middle half of products list 57.6 mg to 195 mg, the median 132.5 mg.285 mg

Higher than 93% of 42 products listing silybin (median 132.5 mg).

Isosilybin A and Isosilybin B60 mg

Source: NIH ODS Dietary Supplement Label Database, label 231939 (entered August 23, 2020), 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?

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 750 mg of milk thistle is higher than 94% of the 1,277 milk thistle products that print an amount; 72 list more.
  • Its 600 mg of silymarin is higher than over 99% of the 208 silymarin products that print an amount.
  • Its 285 mg of silibinins (filed by NIH under silybin) (2 rows of the label added together) is higher than 93% of the 42 silybin products that print an amount; 2 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 Milk Thistle'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
Read the entire label and follow the instructions carefully prior to use. Directions: Take one (1) capsule daily, or as recommended by a healthcare practitioner.
Warnings
Warnings: Keep out of reach of children.
Do not exceed recommended dose. Do not purchase if outer seal is broken or damaged.
When using nutritional supplements, please 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 231939.

What else is on the label?

Other ingredients: Vegetable Cellulose, Vegetable Stearate, Silica, Rice Flour.

How many labels does Milk Thistle have?

2 labels are on file under this name since August 23, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 231939 (current) Entered August 23, 2020 · on the market · 60 vegetarian capsules · UPC 7 37870 15226 2
  2. Label 231870 Entered August 23, 2020 · off the market July 17, 2020 · 60 vegetarian capsules · UPC 7 37870 15226 2

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?