Excretion of Barbiturates into Induced Parotid Saliva of the Rat

Abstract

Anesthetic doses of barbiturates administered to rats were excreted into the parotid saliva. Plasma-saliva concentration ratios were compared to several physicochemical parameters-lipid-water partition coefficient (L/W), degree of ionization, and plasma protein binding-of which L/W appears to correlate best with the excretion of barbiturates into parotid saliva.