INFLUENCE OF SELECTED POLYMERS ON PHARMACEUTICAL: PROPERTIES OF MUCOSAL SYSTEMS CONTAINING ACYCLOVIR

The aim of this paper was to formulate the composition of a bioadhesive film obtained based on acyclovir incorporated into natural bioadhesive polymers (chitosan and guar gum) in different quantitative ratios. To this end, the author developed a technology for preparing films containing various quantitative ratios of chitosan to guar gum: 1:0.25; 1:0.50; 1:0.75; 1:1; and 1.2:0.50. The formulations were used to prepare mucoadhesive films containing 2% acyclovir. The dressings were tested with respect to their physicochemical properties and subjected to dissolution testing. A comparative analysis of Fourier-transform infrared (FT-IR) spectra of pure polymers, acyclovir, and films containing polymers in different quantitative ratios was conducted. The quantitative ratio of chitosan to guar gum significantly impacted the mechanical properties of films: texture, elasticity, tensile strength, swelling, and blur time of the testes carriers. The 1:1 formulation showed the highest mechanical strength and flexibility. The dressing containing 1.2% chitosan and 0.5% guar gum had the longest blur time. An increase in the chitosan content in the formulation significantly affected the drug dissolution parameters, which makes it possible to achieve the desired effect of extended-release time. The FT-IR spectra excluded the formation of drug-polymer interactions. Changes in the quantitative ratios of chitosan and guar game in the carrier’s composition may impact the mechanical properties of the drug formulation and changes in the parameters of active substance release.