Buccal and Percutaneous Absorptions

Abstract
Buccal absorption of 31 aromatic and aliphatic acids and 10 basic drugs in human subjects has been found to be parabolically dependent on the log P, where P is the l-octanol-water partition coefficient. The ideal lipophilic character (log Po) for maximum buccal absorption is found to range from 4.2 to 5.5. The log of the permeability constant of a series of alcohols and steroids has been found to be linearly dependent upon the log of the partition coefficient measured in three different solvent systems.