Physico-chemical and pharmaceutical characterization of sulindac-proglumide binary system

Sulindac is a nonsteroidal anti-inflammatory drug with poor water solubility. This study presents a way to increase its dissolution rate while reducing the risk of gastrointestinal side effects. This approach considers the paired administration of sulindac with the gastroprotector proglumide, in the form of eutectic mixture. Theoretical and experimental methods proved that sulindac and proglumide form a simple eutectic system containing a molar fraction of proglumide of 0.7 at the eutectic point. The product with the eutectic composition, obtained by solvent evaporation, shows a significant improvement in the sulindac dissolution rate compared to the corresponding physical mixture.