PlainVitamins

Klean Endurance

by Klean Athlete · tablet or pill · 90 chewable tablets

  • On the market (NIH)
  • UPC 3 10539 03844 4
  • DSLD label 69609
  • Serving 1 chewable tablet
  • 90 servings

Klean Endurance by Klean Athlete lists 2 ingredients, 2 with an amount per serving of 1 chewable tablet, such as 0.5 g of sugar alcohol and 1.67 g of D-ribose, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on January 25, 2017.

What is in Klean Endurance?

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

Klean Endurance: Supplement Facts rows against the market (DSLD label 69609, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories10 Calories
Total Carbohydrates2 g2%Carbohydrate in Klean Endurance against 21,979 products2 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.2 g

58% of 21,979 products listing carbohydrate give more (median 3 g). Per day at the most servings: 6 g.

Sugar1.67 gSugar in Klean Endurance against 11,807 products1.67 g per serving; the middle half of products list 1 g to 4 g, the median 2 g.1.67 g

68% of 11,807 products listing sugar give more (median 2 g). Per day at the most servings: 5.01 g.

Sugar Alcohol0.5 gSugar Alcohol in Klean Endurance against 706 products0.5 g per serving; the middle half of products list 1 g to 3 g, the median 2 g.0.5 g

95% of 706 products listing sugar alcohol give more (median 2 g). Per day at the most servings: 1.5 g.

D-Ribose1.67 gRibose in Klean Endurance against 199 products1.67 g per serving; the middle half of products list 0.5 g to 5 g, the median 2 g.1.67 g

55% of 199 products listing ribose give more (median 2 g). Per day at the most servings: 5.01 g.

Source: NIH ODS Dietary Supplement Label Database, label 69609 (entered January 25, 2017), 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:

  • 95% of the 706 products that print an amount of sugar alcohol list more than its 0.5 g of sugar alcohol (median 2 g).

The NIH database records 1 to 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?

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
Suggested Usage: Take one chewable tablet one to three times daily with food or as directed.
Warnings
Warning: If you are pregnant, nursing, have any health condition (especially insulin-dependent diabetics) or taking any medication, consult your health care practitioner before using this product.
Keep out of reach of children.
Tamper resistant package, do not use if outer seal is missing.
Allergens and what it does not contain
This product contains no salt, yeast, wheat, gluten, soy, artificial coloring, artificial preservatives or genetically modified organisms (GMOs).
Storage
For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Source: label statements in DSLD label 69609.

What else is on the label?

Other ingredients: Xylitol, Cellulose, Hydroxypropylcellulose, natural Orange flavor, natural Vanilla flavor, Citric Acid, Mannitol, Vegetable Stearate, Stearic Acid, natural Palm Wax, Silica.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): NSF Certified for sport. Listed with: NSF Certified for Sport (a seal is the label's claim; the certifier's own list confirms it).

How many labels does Klean Endurance have?

4 labels are on file under this name since December 21, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 69609 (current) Entered January 25, 2017 · on the market · 90 chewable tablets · UPC 3 10539 03844 4
  2. Label 57656 Entered March 24, 2016 · off the market December 23, 2016 · 90 chewable tablets · UPC 3 10539 03844 4
  3. Label 41825 Entered January 23, 2015 · off the market December 15, 2015 · 90 chewable tablets · UPC 3 10539 03844 4
  4. Label 14353 Entered December 21, 2012 · off the market January 15, 2015 · 90 chewable tablets · UPC 3 10539 03844 4

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Klean Athlete products.

Where next?