GNC L-Theanine 200Mg: Promotes Relaxation GNC L-Theanine 200Mg Is A Dietary Supplement That Can Help Enhance Relaxation. L-Theanine Is An Amino Acid Derived From Black, White And Especially Green Tea Leaves. Just Take One 200Mg Softgel Capsule Of GNC L-Theanine 200Mg Daily To Remain Calm And Relaxed. Brings Relief From Daily Life Offers Calming For Pms Helps Promote A Sense Of Relaxation To Cope With Stress From Everyday Overwork And Fatigue Supports A Restful, Relaxed State | GNC L-Theanine 200Mg - 60 Capsules (60 Servings)