Teevance supports sympathetic autonomic nervous system (ANS) activity.* Teevance is designed to revive activity of the locus ceruleus, a key brain area that uses norepinephrine to regulate sympathetic ANS activity.* The formula contains tyrosine to support central production of norepinephrine and glutamic acid to stimulate vagal signaling to the brain, further enhancing the noradrenergic function.* Teevance provides diosmin, a flavonoid that inhibits the enzyme catechol-o-methyltransferase (COMT), which breaks down epinephrine, norepinephrine, and dopamine.* Lastly, Teevance includes forskolin, which supports neurotransmission by increasing levels of cyclic AMP.