Helps increase resistance to stress in cases of occasional stress-related fatigue In 24 double-blind, randomized placebo controlled clinical trials, KSM-66 Ashwagandha has been clinically proven to help: increase resistance to stress relief of restlessness provide athletic support or supplement workout/exercise improve the quality of sleep KSM-66 Ashwagandha is the highest concentration full-spectrum extract on the world market today, that is drawn using only the roots of the ashwagandha plant. It is produced using a unique proprietary extraction process, based on “Green Chemistry” principles, without using alcohol or any other chemical solvent. vegan. gluten-free