Review article

https://doi.org/10.2478/acph-2013-0034

Liquisolid systems and aspects influencing their research and development

BARBORA VRANIKOVA ; Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno 612 42, Czech Republic
JAN GAJDZIOK ; Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno 612 42, Czech Republic

Abstract

Many modern drugs are poorly water soluble substances, which causes difficulties in the development of solid dosage forms with sufficient bioavailability. Preparation of liquisolid systems (LSS) is a novel technique for improving solubility, dissolution and bioavailability of such drugs. The basic principle of LSS preparation is conversion of the drug in liquid state into a free-flowing, compressible, dry powder through its absorption into suitable excipients – porous carriers (aluminometasilicates, microcrystalline cellulose), subsequently coated with material having high absorption capacity (silicon dioxide commonly known as colloidal silica). LSS exhibit advantages such as lower production costs compared to soft capsules; simple processing and providing enhanced drug release. The main benefit is higher bioavailability of the liquid drug, caused by a large surface area available for absorption. The article tries to clarify specific aspects connected with the formulation of LSS: properties of excipients (surface area, absorption capacity), variables related to the processing (solubility, liquid load factor) and dosage form evaluation

Keywords

bioavailability improvement; carrier material; enhanced release; liquid drug; liquisolid technology

Hrčak ID:

110454

URI

https://hrcak.srce.hr/110454

Publication date:

31.12.2013.

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