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.‡

D-Ribose is the critical building block for producing ATP, the energy currency of the cell.‡

Supplementing with D-Ribose allows the muscles to bypass the slow, rate-limited process of making ribose from glucose, thereby accelerating energy synthesis and recovery.‡

Great-tasting Chewable Tablet.

Serving Size: 1 Chewable Tablet                     

Servings Per Container Approx. 90                 

• Calories           10        
• Total Carbohydrate     2g        <2%^
• Sugars 1.67g   
• Sugar Alcohol  0.5g     *
• D-Ribose         1.67g   *

Percent Daily Values are based on a 2,000 calorie diet.

*Daily Value (DV) not established.

Other ingredients: Xylitol, Cellulose, Hydroxypropylcellulose, Nautral Orange and Vanilla flavors (milk), Citric Acid, Mannitol, Vegetable Stearate, Stearic Acid, Natural Palm Wax (Copernicia Prunifera), and silica.

Take one chewable tablet one to three times daily, pre, during or post-activity with food.