Theanine is an amino acid primarily found in tea and mushrooms. Like sipping a cup of hot tea, L-theanine helps the body relax. It may ease anxiety and stress, promoting an overall sense of well-being without causing drowsiness.
L-theanine can help reduce insomnia and when paired with caffeine, it can improve mental focus.
Some studies find L-theanine can benefit the immune system, decrease upper respiratory tract infections, and improve inflammation in the intestinal tract.