PlainVitamins

Maxi Flex

by DC · capsule · 120 capsules

  • On the market (NIH)
  • DSLD label 266702
  • Serving 1 to 2 capsules; amounts per 1 capsule
  • 120 servings

Maxi Flex by DC lists 3 ingredients, 3 with an amount per serving of 1 capsule, such as 15 mg of vitamin C, 500 mg of glucosamine sulfate 2NaCl and 500 mg of M.s.m.. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2022.

What is in Maxi Flex?

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).

Maxi Flex: Supplement Facts rows against the market (DSLD label 266702, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas L-Ascorbic Acid15 mg25%Vitamin C in Maxi Flex against 18,583 products15 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg15 mg

93% of 18,583 products listing vitamin C give more (median 100 mg). Per day at the most servings: 30 mg.

Glucosamine Sulfate 2NaCl500 mgGlucosamine Sulfate in Maxi Flex against 875 products0.5 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1 g.0.5 g

65% of 875 products listing glucosamine sulfate give more (median 1 g). Per day at the most servings: 1 g.

M.s.m.500 mgMethylsulfonylmethane in Maxi Flex 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). Per day at the most servings: 1,000 mg.

Source: NIH ODS Dietary Supplement Label Database, label 266702 (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:

  • 93% of the 18,583 products that print an amount of vitamin C list more than its 15 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?

3 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 or 2 capsules two times 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: Do not take this product if you are pregnant, nursing or allergic to shell fish.
Contains crustacean shellfish (crab & shrimp) ingredients.
Allergens and what it does not contain
Gluten free
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 266702.

What else is on the label?

Other ingredients: Gelatin, Silica, Vegetable Magnesium Stearate.

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 Maxi Flex have?

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

  1. Label 266702 (current) Entered February 23, 2022 · on the market · 120 capsules
  2. Label 266701 Entered February 23, 2022 · on the market · 120 capsules
  3. Label 266700 Entered February 23, 2022 · on the market · 120 capsules
  4. Label 266698 Entered February 23, 2022 · on the market · 60 capsules
  5. Label 266697 Entered February 23, 2022 · on the market · 60 capsules
  6. Label 244715 Entered February 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?