High Quality Content by WIKIPEDIA articles! Viloxazine (Vivalan, Emovit, Vivarint, Vicilan) is a bicyclic antidepressantmorpholine derivative that acts as a selective norepinephrine reuptake inhibitor (NRI). It is a racemic compound with two stereoisomers, the (S)-(–)-isomer being five times as pharmacologically active as the (R)-(+)-isomer.