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Klean Endurance 90 caps Klean Athlete

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.

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Availability: In stock

Douglas Labs

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Klean Endurance is a useful dietary supplement to help the athlete restore energy, support cardiac function and reduce muscle stiffness, soreness, and fatigue.

Additional Info

Additional Info

Size 90
Form Capsules
Brand Douglas Labs
Type Unisex
Content Natural
Dietery Specialty Paraben Free
Suggested Use

Take 1-3 chewable tablets just before (within 15-30 minutes) and just after exercise or physical activity.

Best taken with a food or sugar source to prevent low blood sugar from occurring

Supplement Facts

Serving Size: 1 Chewable Tablet

Amount Per Serving
 ... 10
Total Carbohydrates ... 2g
Sugars ... 1.67g 
(from D-Ribose)
Sugar Alcohol ... 0.5g 
D-Ribose ... 1.67g

Other ingredients: Xylitol, cellulose, hydroxypropylcellulose, natural orange and vanilla flavors, citric acid, mannitol, vegetable stearate, stearic acid, natural palm wax(Copernicia prunifera), and silica.

This product contains NO salt, yeast, wheat, gluten, soy, corn, dairy products, artificial flavoring or colors, preservatives or ingredients of animal origin.

UPC Code No


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