has role is enantiomer of independent continuant renoprotective agent anxiolytic drug non-narcotic analgesic alpha-adrenergic agonist antineoplastic agent anticonvulsant antihypertensive agent sedative anti-arrhythmia drug methylbenzene dexmedetomidine CHEBI:4466 medetomidine levomedetomidine antitussive neuroprotective agent anti-inflammatory agent vulnerary anti-obesity agent