Abstract: A composition and method of treating adrenergic dysregulation by administering the composition is disclosed, wherein the composition comprises a a2-adrenergic receptor agonist; a pharmaceutically acceptable hydrophilic matrix and a release-retardant of a metal alkyl sulfate. In embodiments, the composition provides a sustained release of the agonist, wherein after administration of the composition no more than once about every 12 hours to a subject having a steady state plasma concentration of the a2-adrenergic receptor agonist, the agonist's plasma concentration peak-to-trough ratio is no greater than about 1.9.

Abstract: The invention relates to a method of treating sialorrhea in a human patient, which comprises orally administering glycopyrrolate in a liquid solution to the human patient under fasted conditions.