The technique of liquisolid preparation is used to formulate drug solution in solid dosage forms. Drug solution is, generally, prepared by dissolving the drug in non-volatile water-miscible solvent. Even though the drug is in a tablet form, it is held in solution. Accordingly, the dissolution step, a pre-requiste for drug absorption, may be bypassed (Liao and Jarowski, 1984) and better bioavailability of poorly soluble drugs achieved (Spireas et al., 1992 and Spireas, 1995). In order to overcome the limited solubility of the drug, hydrochlorothiazide was formulated as liquisolid tablets. The method of preparation of hydrochlorothiazide liquisolid tablets as well as the effect of various formulation and processing variables on the preparation and the release properties of the tablets are described in details elsewhere