PlainVitamins

SureFlex

by Wonder Laboratories · capsule · 250 capsules

  • On the market (NIH)
  • UPC 0 99528 16925 2
  • DSLD label 315430
  • Serving 2 capsules
  • 125 servings

SureFlex by Wonder Laboratories lists 4 ingredients, 4 with an amount per serving of 2 capsules, such as 200 mg of vitamin C, 2 mg of manganese, 500 mg of glucosamine sulfate 2NaCl and 400 mg of chondroitin sulfate. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2024.

What is in SureFlex?

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).

SureFlex: Supplement Facts rows against the market (DSLD label 315430, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas L-Ascorbic Acid200 mg222%Vitamin C in SureFlex against 18,583 products200 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg200 mg

Higher than 63% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 600 mg.

Manganeseas Manganese SulfateManganese (Form: as Manganese Sulfate)2 mg87%Manganese in SureFlex against 7,016 products2 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg2 mg

38% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 6 mg.

Glucosamine Sulfate 2NaCl500 mgGlucosamine Sulfate in SureFlex 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: 1.5 g.

Chondroitin Sulfate400 mgChondroitin Sulfate in SureFlex against 950 products400 mg per serving; the middle half of products list 200 mg to 1,200 mg, the median 400 mg.400 mg

48% of 950 products listing chondroitin sulfate give more (median 400 mg). Per day at the most servings: 1,200 mg.

Source: NIH ODS Dietary Supplement Label Database, label 315430 (entered September 25, 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 3 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?

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 2 capsules three 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 (shrimp & crab) 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 315430.

What else is on the label?

Other ingredients: Cellulose, Gelatin, Magnesium Stearate, Silica.

How many labels does SureFlex have?

5 labels are on file under this name since March 24, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 315430 (current) Entered September 25, 2024 · on the market · 250 capsules · UPC 0 99528 16925 2
  2. Label 262526 Entered February 23, 2022 · on the market · 100 capsules
  3. Label 262528 Entered December 18, 2021 · on the market · 250 capsules
  4. Label 215670 Entered March 24, 2020 · off the market October 24, 2022 · 250 capsules · UPC 0 99528 16925 2
  5. Label 215668 Entered March 24, 2020 · off the market October 24, 2022 · 100 capsules · UPC 0 99528 16910 8

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

Who makes it?

The label names Wonder Laboratories (distributor), White House, TN. All Wonder Laboratories products.

Where next?