Abstract
Dry agar beads containing theophylline were prepared. The release rate of theophylline from the agar beads in vitro was smaller than the dissolution rate of the drug from pure drug powders. The salivary levels of the drug following oral administration of the agar beads to three healthy volunteers were determined by reversed-phase high pressure liquid chromatography. Results of pharmacokinetic analyses indicated sustained absorption of the drug following the administration of the agar beads.
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