NAC 500 mg
by ProCaps Laboratories · capsule · 360 easy-to-swallow capsules
- Off the market since February 2022 (NIH)
- UPC 385999
- DSLD label 248503
- Serving 1 capsule
- 360 servings
NAC 500 mg by ProCaps Laboratories lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 30 mg of vitamin C and 500 mg of N-acetyl cysteine. Its current label entered the NIH Dietary Supplement Label Database on May 22, 2021.
What is in NAC 500 mg?
Each row as the label prints it, per serving of 1 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Ascorbyl Palmitate, Calcium AscorbateVitamin C (Form: as Calcium Ascorbate, Ascorbyl Palmitate) | 30 mg | 33% | 83% of 18,583 products listing vitamin C give more (median 100 mg). |
| N-Acetyl Cysteine | 500 mg | Higher than 74% of 1,259 products listing N-acetyl cysteine (median 150 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 248503 (entered May 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 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?
3 products list the very same ingredients; the nearest amounts come first.
- NAC 500 N-Acetyl CysteineProCaps Laboratories · off the market same ingredients
- NAC 500ProCaps Laboratories same ingredients
- NanoNAC+BioPharma Scientific same ingredients
- NAC N-Acetyl Cysteine 600 mgVitamin World · off the market 1 shared, 71% alike
- NAC 600GNC · off the market 1 shared, 71% alike
- N-Acetyl Cysteine 600 mgPuritan's Pride 1 shared, 71% 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 Consume one or more capsules daily or as recommended by your physician. As with any dietary supplement, this product is most effective as part of a healthy diet and active lifestyle, along with a daily multi-vitamin-mineral formula. For questions about the use of this product call 800.332.7799.
- Allergens and what it does not contain
- Contains no milk, soy, yeast, corn, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens or manufacturing additives. Contains no additives of any kind.
Source: label statements in DSLD label 248503.
What else is on the label?
Other ingredients: Gelatin Capsule.
How many labels does NAC 500 mg have?
One label is on file, entered on May 22, 2021.
- Label 248503 (current) Entered May 22, 2021 · off the market February 4, 2022 · 360 easy-to-swallow capsules · UPC 385999
DSLD also links this label to: NAC 500 (image 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 ProCaps Laboratories (manufacturer), Henderson, NV. All ProCaps Laboratories products.