PlainVitamins

Mark X

by DC · tablet or pill · 90 tablets

  • On the market (NIH)
  • DSLD label 266267
  • Serving 1 tablet
  • 90 servings

Mark X by DC lists 2 ingredients, 2 with an amount per serving of 1 tablet, such as 1,000 mg of vitamin C and 100 mg of rose hips. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2022.

What is in Mark X?

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

Mark X: Supplement Facts rows against the market (DSLD label 266267, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin C1,000 mg1,111%Vitamin C in Mark X against 18,583 products1,000 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,000 mg

Higher than 91% of 18,583 products listing vitamin C (median 100 mg).

Rose Hips100 mgRose (unspecified) in Mark X against 195 products100 mg per serving; the middle half of products list 14.5 mg to 100 mg, the median 30 mg.100 mg

Higher than 71% of 195 products listing rose (unspecified) (median 30 mg).

Source: NIH ODS Dietary Supplement Label Database, label 266267 (entered February 23, 2022), 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 1,000 mg of vitamin C is higher than 91% of the 18,583 vitamin C products that print an amount; 445 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?

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
Directions: As a dietary supplement take 1 tablet daily.
Warnings
Tamper Evident: Do not use this product if imprinted foil seal under cap is broken or missing.
Keep out of reach of children.
Caution: If you are pregnant or nursing do not take this product.
Allergens and what it does not contain
Gluten free/Non-GMO
Storage
Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).

Source: label statements in DSLD label 266267.

What else is on the label?

Other ingredients: Ascorbic Acid, Vegetable Cellulose, Vegetable Magnesium Silicate, Vegetable Stearic Acid, Vegetable Magnesium Stearate, Silica.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Quali Pure.

How many labels does Mark X have?

5 labels are on file under this name since March 25, 2021: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 266267 (current) Entered February 23, 2022 · on the market · 90 tablets
  2. Label 266266 Entered February 23, 2022 · on the market · 30 tablets
  3. Label 266265 Entered February 23, 2022 · on the market · 30 tablets
  4. Label 266264 Entered February 23, 2022 · on the market · 30 tablets
  5. Label 245508 Entered March 25, 2021 · on the market · N/A

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

Who makes it?

The label names Dee Cee Laboratories, Inc. (manufacturer), White House, TN. All DC products.

Where next?