L-theanine is an amino acid found in green and black tea. It is known as a “therapeutic” amino acid because it facilitates relaxation. When paired with caffeine, it may also provide a boost to focus and attention.
L-theanine is an amino acid found in green and black tea. It is known as a “therapeutic” amino acid because it facilitates relaxation. When paired with caffeine, it may also provide a boost to focus and attention.