PlainVitamins

MSM 1,000 mg

by Source Naturals · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 0 21078 01288 7
  • DSLD label 296089
  • Serving 2 to 3 tablets; amounts per 2 tablets
  • 30 servings

MSM 1,000 mg by Source Naturals lists 3 ingredients, 3 with an amount per serving of 2 tablets, such as 250 mg of vitamin C, 160 mcg of molybdenum and 2 g of OptiMSM. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2023.

What is in MSM 1,000 mg?

Each row as the label prints it, per serving of 2 tablets. 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 1,000 mg: Supplement Facts rows against the market (DSLD label 296089, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ascorbic Acid250 mg417%Vitamin C in MSM 1,000 mg against 18,583 products250 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg250 mg

Higher than 68% of 18,583 products listing vitamin C (median 100 mg).

Molybdenumas Molybdenum Chelate160 mcg213%Molybdenum in MSM 1,000 mg against 4,390 products160 mcg per serving; the middle half of products list 25 mcg to 75 mcg, the median 50 mcg.DV 45 mcgUL 2,000 mcg160 mcg

Higher than 96% of 4,390 products listing molybdenum (median 50 mcg).

OptiMSMas Methylsulfonylmethane2 gMethylsulfonylmethane in MSM 1,000 mg against 1,454 products2,000 mg per serving; the middle half of products list 150 mg to 1,000 mg, the median 500 mg.2,000 mg

Higher than 94% of 1,454 products listing methylsulfonylmethane (median 500 mg).

Source: NIH ODS Dietary Supplement Label Database, label 296089 (entered August 23, 2023), 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?

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 160 mcg of molybdenum is higher than 96% of the 4,390 molybdenum products that print an amount; 150 list more.
  • Its 2,000 mg of OptiMSM (filed by NIH under methylsulfonylmethane) is higher than 94% of the 1,454 methylsulfonylmethane products that print an amount; 39 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?

2 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: 2 to 3 tablets daily.
Warnings
Warning: Not for use by women who are pregnant, may become pregnant, or breastfeeding.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 296089.

What else is on the label?

Other ingredients: Sorbitol, Stearic Acid, modified Cellulose Gum, Silica, Magnesium Stearate.

How many labels does MSM 1,000 mg have?

2 labels are on file under this name since October 24, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 296089 (current) Entered August 23, 2023 · on the market · 60 tablets · UPC 0 21078 01288 7
  2. Label 275422 Entered October 24, 2022 · on the market · 120 tablets · UPC 0 21078 01289 4

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

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?