PlainVitamins

NAC

by Douglas Cooper Co. · capsule · 100 veg capsules

  • On the market (NIH)
  • DSLD label 247373
  • Serving 1 veg capsule
  • 100 servings

NAC by Douglas Cooper Co. lists 3 ingredients, 3 with an amount per serving of 1 veg capsule, such as 25 mcg of selenium, 50 mcg of molybdenum and 600 mg of N-acetyl cysteine. Its current label entered the NIH Dietary Supplement Label Database on April 22, 2021.

What is in NAC?

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

NAC: Supplement Facts rows against the market (DSLD label 247373, January 2026 release)
IngredientAmount% DVAmong products listing it
Seleniumas L-SelenomethionineSelenium (Form: from L-Selenomethionine)25 mcg45%Selenium in NAC against 7,658 products25 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg25 mcg

75% of 7,658 products listing selenium give more (median 55 mcg). Per day at the most servings: 50 mcg.

Molybdenumas Sodium MolybdateMolybdenum (Form: from Sodium Molybdate)50 mcg111%Molybdenum in NAC against 4,390 products50 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg50 mcg

41% of 4,390 products listing molybdenum give more (median 50 mcg). Per day at the most servings: 100 mcg.

N-Acetyl Cysteine600 mgN-Acetyl Cysteine in NAC against 1,259 products600 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.600 mg

Higher than 80% of 1,259 products listing N-acetyl cysteine (median 150 mg). Per day at the most servings: 1,200 mg.

Source: NIH ODS Dietary Supplement Label Database, label 247373 (entered April 22, 2021), 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 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?

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 capsule twice daily.
Warnings
Caution: For adults only.
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Keep out of reach of children.
Do not eat freshness packets. Keep in bottle.
To report a serious adverse event, or for product information, contact 1-800-234-8686
Not manufactured with wheat, gluten, soy, 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
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients.
Non-GMO
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 247373.

What else is on the label?

Other ingredients: Cellulose, Stearic Acid, Citric Acid.

How many labels does NAC have?

One label is on file, entered on April 22, 2021.

  1. Label 247373 (current) Entered April 22, 2021 · on the market · 100 veg capsules

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

Who makes it?

The label names Douglas Cooper Co. (distributor), Carmel, IN. All Douglas Cooper Co. products.

Where next?