Higher Nature L-Theanine 100mg Capsules contain the natural amino acid L-theanine, which is traditionally found in green tea. This supplement is formulated to promote a state of “alert relaxation” by encouraging alpha brain waves, which are associated with calmness and mental clarity without causing drowsiness. Each capsule provides a flexible 100mg dose that can be taken to help improve concentration, learning, and mental focus during the day, or one hour before bed to support relaxation and promote a restful night’s sleep. The formulation is suitable for vegetarians and vegans. It is recommended to take 1-2 capsules daily between meals.