Abstract
Surfactant/β-cyclodextrin interactions were investigated by studying the dissolution of mequitazine in different binary (aqueous solutions of β-CD or surfactants) and ternary (aqueous solution of β-CD and surfactants) dissolution media. Results were compared with those obtained from binary media with 50, 250, and 500 mg of surfactants (preceding paper). Results show that there is an interaction between β-cyclodextrin and surface-active agent, and that the type and extent of interaction are controlled by the nature and the amount of the surface-active agent. A decrement in drug dissolution rate was obtained from all of the ternaly media containing β-cyclodextrin and sodium lauryl sulfate as surfactant in the ratio of 1:1 mol/mol. These facts suggest that sodium lauryl sulfate and β-cyclodextrin form an inclusion compound in the molecular ratio of 1:1.
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