Stress Management Promotes Relaxation Healthy Vascular Function With Decaf Green Tea Non-GMO A Dietary Supplement Vegetarian/Vegan Kosher Amino Acids Family Owned Since 1968 GMP Quality AssuredL-Theanine is a unique amino acid found naturally in the tea plant (Camellia sinensis). L-Theanine promotes relaxation while maintaining alertness and promotes healthy cognitive function. L-Theanine may also support healthy vascular function through this relaxing effect.