L-Theanine is a natural Amino Acid found in the body which supports a sense of calmness and alertness. It dissolves clear in water and it is tasteless. L-Theanine has been used in bird calming formulas, other pet related calming products, and even with people.  L-theanine can increase certain neurotransmitters in your brain, including dopamine. Multiple studies have shown that L-theanine increases dopamine production, thus causing an antidepressant effect and enhancing cognitive function.