PlainVitamins

NAC 500 mg with Milk Thistle

by Dr. Mercola · capsule · 180 capsules

  • On the market (NIH)
  • UPC 8 10487 03971 0
  • DSLD label 308766
  • Serving 2 capsules
  • 90 servings

NAC 500 mg with Milk Thistle by Dr. Mercola lists 3 ingredients, 3 with an amount per serving of 2 capsules, such as 500 mg of N-acetyl-L-cysteine, 300 mg of milk thistle seed extract and 50 mg of broccoli, powder. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.

What is in NAC 500 mg with Milk Thistle?

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).

NAC 500 mg with Milk Thistle: Supplement Facts rows against the market (DSLD label 308766, January 2026 release)
IngredientAmount% DVAmong products listing it
N-Acetyl-L-Cysteine500 mgN-Acetyl Cysteine in NAC 500 mg with Milk Thistle against 1,259 products500 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.500 mg

Higher than 74% of 1,259 products listing N-acetyl cysteine (median 150 mg).

Milk Thistle Seed Extract300 mgMilk Thistle in NAC 500 mg with Milk Thistle against 1,277 products300 mg per serving; the middle half of products list 90 mg to 300 mg, the median 175 mg.300 mg

Higher than 72% of 1,277 products listing milk thistle (median 175 mg).

Broccoli, Powderorganic50 mgBroccoli in NAC 500 mg with Milk Thistle against 530 products50 mg per serving; the middle half of products list 40 mg to 250 mg, the median 100 mg.50 mg

60% of 530 products listing broccoli give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 308766 (entered June 20, 2024), 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.

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?

1 product lists the very same ingredients; the nearest amounts come first.

  • Liver SupportDr. Mercola · off the market same ingredients
  • Liver SupportLiveLong · off the market 2 shared, 68% alike
  • Liv-SLiveLong Nutrition · off the market 2 shared, 68% alike
  • DetoxYes You Can! 3 shared, 56% alike
  • Detox ASFSAN 2 shared, 56% alike
  • Milk ThistleWonder Laboratories 2 shared, 48% alike

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 use: Adults, as a dietary supplement, take two (2) capsules daily with a meal.
Warnings
Keep out of reach of children.
Do not use if safety seal is broken.
If you are nursing, pregnant, taking medication or have a medical condition, consult your physician before taking this product.

Source: label statements in DSLD label 308766.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Methylcellulose.

How many labels does NAC 500 mg with Milk Thistle have?

2 labels are on file under this name since June 22, 2023: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 308766 (current) Entered June 20, 2024 · on the market · 180 capsules · UPC 8 10487 03971 0
  2. Label 287238 Entered June 22, 2023 · on the market · 60 capsules · UPC 8 13006 01739 8

DSLD also links this label to: Liver Support (package size difference, same product), Liver Support (package size difference, same product).

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

Who makes it?

The label names NHP (distributor), Cape Coral, FL. All Dr. Mercola products.

Where next?