Klean Endurance (90 chewable tabs) by Doulas Laboratories is a NSF Certified for Sport supplement of chewable tablets that contain pure D-Ribose to support the natural production of adenosine triphosphate (ATP). Klean Endurance chewable tablets are great tasting, natural vanilla flavored, sweetened with xylitol and convenient for on-the-go supplementation.‡

ADDITIONAL INFORMATION:
Klean Athlete Product Usage Guide

‡These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.