The present research works carried out with the aim to prepare suspension dosage form using these microparticles for oral use. Solid Dosage forms are difficult for Pediatric, Geriatric patient & Dysphasic patients so for that patients the suspension dosage form more favorable than other solid dosage form. Albendazole drug has poor oral bioavailability (>5%) & a delayed release microspheric suspension of this drug would improve patient compliance & ease of swallowing. Microencapsulate facilitate the targeting of drug & mask the metallic taste of drug. The % yield was higher in the solvent evaporation method, in the spray drying the % yield was less that was drawback of the spray drying method. The % entrapment efficiency was good in the both method. Spray drying method is more reproducible than the solvent evaporation method. The stability study results show similar values as at the initial time. So, the formulation was stable and had no significant change in drug release profile & drug content on storage for a long time. So the suspension can effectively used for pediatric and geriatric patients. In vivo study will use for confirmatory study.

Allopurinol is poorly water soluble drug used in treatment of gout. Rapid onset of action of allopurinol drug in treatment of gout is required. Solubility is rate limiting step for this drug. To enhance the solubility here solid dispersion and crystal engineering approach was selected and applied. The solubility and dissolution rate of allopurinol can be enhanced by the use of SDs of allopurinol with PVPK30. The solubilization effect of PVPK30, reduction of particle aggregation of the drug, absence of crystallinity, and alteration of the surface properties of the drug particles might be responsible for the enhanced solubility and dissolution rate of allopurinol from its SD. From FTIR spectroscopy, it was concluded that there was no well defined interaction between allopurinol and PVPK30, since no new peaks or shift of peaks could be observed. The absence of an endothermic peak of allopurinol in the DSC thermo grams of SDs with PVPK30showed the conversion of allopurinol from crystalline to amorphous state. It can be concluded that the preparation SDs of allopurinol with Polymer PVPK30 with ratio (1:2) provides a promising way to enhance its solubility and dissolution.