Mega MSM
by U.S. Doctors' Clinical · capsule · 90 capsules
- On the market (NIH)
- UPC 8 51743 00637 4
- DSLD label 176504
- Serving 2 capsules
- 45 servings
Mega MSM by U.S. Doctors' Clinical lists 5 ingredients, 2 with an amount per serving of 2 capsules, such as 20 mg of vitamin C and 1,200 mg of MSM; 3 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on April 25, 2018.
What is in Mega MSM?
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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin C | 20 mg | 33% | 90% of 18,583 products listing vitamin C give more (median 100 mg). Per day at the most servings: 40 mg. |
| MSM | 1,200 mg | Higher than 87% of 1,454 products listing methylsulfonylmethane (median 500 mg). Per day at the most servings: 2,400 mg. | |
| CollaplexCollaplex Note: Joint support complex | 220 mg | ||
| Collagenas ChickenCollagen (Form: from Chicken) Note: Not a significant source of Collagen Type II. | in the blend, no amount given | ||
| Neem | in the blend, no amount given | ||
| Corydalis | in the blend, no amount given |
Source: NIH ODS Dietary Supplement Label Database, label 176504 (entered April 25, 2018), 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?
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:
- 90% of the 18,583 products that print an amount of vitamin C list more than its 20 mg of vitamin C (median 100 mg).
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?
The products whose ingredient lists overlap most with Mega MSM's, rare ingredients counting for more.
- Joint RevitalizerKlaire Labs · off the market 3 shared, 43% alike
- Hyaluronic Acid with BioCell Collagen & OptiMSMNature's Lab Gold 2 shared, 36% 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
- Directions: For adults only. Take two (2) capsules twice daily during or after morning and afternoon meals.
- Warnings
- Warning: Women who are pregnant or lactating should consult a health care professional before using any nutritional product.
- If any adverse reactions occur, discontinue use and consult a health care professional.
- Not for use by children under the age 18. Keep bottle tightly closed and out of reach of children.
- Do not use if seal under cap has been broken.
- Do not take this supplement within one hour of taking medications.
- Do not exceed the recommended dosage.
- Allergens and what it does not contain
- Gluten free
- Storage
- Keep bottle tightly closed and out of reach of children. Store in a cool, dry place.
Source: label statements in DSLD label 176504.
What else is on the label?
Other ingredients: Gelatin, Silicon Dioxide, Magnesium Stearate, Titanium Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): cGMP; Made in U.S.A.
How many labels does Mega MSM have?
One label is on file, entered on April 25, 2018.
- Label 176504 (current) Entered April 25, 2018 · on the market · 90 capsules · UPC 8 51743 00637 4
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names U.S. Doctors' Clinical (distributor), Westminster, CA. All U.S. Doctors' Clinical products.