Abstract
Liquisolid system is a novel concept of drug delivery via oral route. Solubility is the phenomenon of dissolution of solid in liquid phase and is one of the important parameter to achieve desired concentration of drug in systemic circulation for pharmacological response. Poorly water soluble compound's oral administration often require high doses in order to reach therapeutic plasma concentrations because insufficient dissolution rate of the drug is the limiting factor in the oral bioavailability and one of the most challenging aspects of drug development. Design of this technique was according to new mathematical model proposed by Spireas et al. The drug is dissolved or dispersed in suitable non-volatile solvent and this liquid medication is converted to free flow powder by using carrier and coating material. To this suitable excipients were added and tabletting by direct compression. In this case, even though the drug is in a solid dosage form, it is held within the powder substrate in solution or, in a solubilized, almost molecularly dispersed state, which contributes to the enhanced drug dissolution properties. Large scale production of fabricated drug on commercial level. Succesful liquisolid tablet is a determination of optimal flowable liquid retention.
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