Levomedetomidine is the levorotary enantiomer of the racemic α2-adrenergic receptor (α2-AR) agonist medetomidine.Unlike medetomidine or the dextrorotary enantiomer dexmedetomidine , levomedetomidine does not induce sedation or analgesia when administered alone in dogs.However, levomedetomidine does reduce the level of dexmedetomidine-induced sedation in dogs. Formulations containing levomedetomidine have been used as anesthetics.