Calm is a dietary supplement that contains a blend of 100mg GABA, 100mg of Suntheanine, and 50mcg of Huperzine A. GABA is known for producing a calming effect. It's thought to play a major role in controlling nerve cell hyperactivity associated with anxiety, stress, and fear. Scientists also call GABA a non-protein amino acid neurotransmitter. Simply take one full dropper before bed. You can take as needed if you wake up during the night.