Auxiliary Substances for Enhancement of Complexation Efficiency and Dissolution Rate of Drug-Cyclodextrin Complexes
Abstract
Background: Enzymatic starch breakdown yields 1, 4-linked D-glucopyranoside subunits, which are the building blocks of the cyclodextrin (CD) family of macromolecules. β-Cyclodetrins (β-CDs) have the capability to improve the solubility of partially soluble drugs, as well as their permeability across biological membranes and stability. However, factors like limited solubility, high cost of derivatives and their toxicity at high concentrations has directed the researchers toward multicomponent inclusion complexes (MCIC). Introduction: Incorporating auxiliary substances (AS) leads to MCIC formation during complexation. The auxiliary agent interacts at the molecular level with the CDs, enhances the complexation competence of β-CD or its derivatives, and minimizes the amount required for solubilization of poorly soluble drugs. They also enhance stability of drug-CD complex. Due to these advantages, the popularity of MCIC has increased amongst formulation scientists. Conclusion: This review describes various AS that could be used to prepare MCIC to expand solubility and other properties of drugs and minimize cost of related formulation.
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