PlainVitamins

MSM 500 mg

by ProCaps Laboratories · capsule · 360 easy-to-swallow capsules

  • On the market (NIH)
  • UPC 412804
  • DSLD label 320164
  • Serving 1 capsule
  • 360 servings

MSM 500 mg by ProCaps Laboratories lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 50 mg of vitamin C and 500 mg of methylsulfonylmethane. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2024.

What is in MSM 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).

MSM 500 mg: Supplement Facts rows against the market (DSLD label 320164, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium Ascorbate50 mg56%Vitamin C in MSM 500 mg against 18,583 products50 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg50 mg

77% of 18,583 products listing vitamin C give more (median 100 mg).

Methylsulfonylmethane500 mgMethylsulfonylmethane in MSM 500 mg against 1,454 products500 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.500 mg

36% of 1,454 products listing methylsulfonylmethane give more (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 320164 (entered November 22, 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?

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 use Consume one capsule daily. You can increase your intake as required or as guided by your physician.
Allergens and what it does not contain
Contains no additives or common allergens Contains no milk, soy, yeast, corn, wheat, gluten, sodium, salt, sugar, fat, cholesterol, color, preservative, common allergens, genetically modified (GMO) ingredients, or manufacturing additives.

Source: label statements in DSLD label 320164.

What else is on the label?

Other ingredients: Gelatin.

How many labels does MSM 500 mg have?

3 labels are on file under this name since June 23, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 320164 (current) Entered November 22, 2024 · on the market · 360 easy-to-swallow capsules · UPC 412804
  2. Label 275276 Entered October 24, 2022 · off the market December 13, 2023 · 360 easy-to-swallow capsules · UPC 412804
  3. Label 248509 Entered June 23, 2021 · off the market February 4, 2022 · 360 easy-to-swallow capsules · UPC 412804

DSLD also links this label to: MSM 500 (image difference, same product), MSM 500 (image difference, same product), MSM 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 Labs (manufacturer), Henderson, NV. All ProCaps Laboratories products.

Where next?