Suntheanine is clinically proven, award winning and patented L-theanine. Suntheanine has been shown to reduce stress while improving focus and concentration without drowsiness.* Suntheanine will also help prevent caffeine jitters and improve the quality of your sleep.* Suntheanine is an effective supplement, even diminishing the symptoms of PMS.* And the best part? This health supplement is gluten-free, non-GMO, non-dairy and vegetarian!