Dexmedetomidine hydrochloride is an adrenergic alpha-agonist, hypnotic, sedative, and analgesic (non-narcotic) drug. It is chemically related to dexmedetomidine. Dexmedetomidine is a specific and selective alpha-2 adrenoceptor agonist. By binding to the presynaptic alpha-2 adrenoceptors, it inhibits the release if norepinephrine, therefore, terminate the propagation of pain signals causing sedation and analgesia. The drug is administered to dogs for reversal of the sedative and analgesic effects of dexmedetomidine hydrochloride or medetomidine hydrochloride; to facilitate clinical examination and procedures, minor surgical procedures and minor dental procedures. Intended use by intramuscular injection only.