Note: This product cannot be sold in Canada

Product Information



Klean Endurance™ contains pure D-Ribose to support the natural process by which a body produces adenosine triphosphate (ATP). The naturally-occurring pentose sugar supports cardiovascular health, energy production and mitochondrial function. Available in a great-tasting chewable tablet, Klean Endurance™ offers a clinically proven method to help restore energy during exercise.


Nutrition Facts
Serving Size  1 Tablet
Servings Per Container  90

Amount Per Serving     % DV

Calories 10  

Total Carbohydrate 2g   1%
Sugar Alcohol 0.5g  
Sugars 1.67g  

D-Ribose  1.67 g   **

** Daily Value (DV) not established.
Other Ingredients
Xylitol, Cellulose, Hydroxypropylcellulose, natural orange and vanilla flavors (milk), Citric Acid, Mannitol, Vegetable Stearate, Stearic Acid, natural palm wax (Copernicia prunifera), Silica
Label (click image to enlarge)

How To Use

Take one chewable tablet one to three times daily with food or as directed.
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.
Douglas Laboratories
600 Boyce Road
Pittsburgh, PA 15205 USA


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