The utilization of hot melt extrusion (HME) technology for new applications is increasing in recent years, as evidenced by the many published reports in the last five years. Because of its process automation and low-cost scale-up qualities, which decrease labor expenses and capital investment. HME has emerged as an essential technology for drug delivery applications in pharmaceutical research and manufacture. The novel application of the HME process provides a promising alternate approach in the formulation of novel drug delivery systems. The present review discusses the importance of HME in the development of novel drug delivery systems with the review of relevant case studies. Keywords: hot melt extrusion, novel drug delivery, pharmaceutical research

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The aim of current research is to develop flurbiprofen microemulsion gel for transdermal delivery. To prepare a microemulsion oil, surfactant and co-surfactant selection is one of the important criteria. Selected to prepare different ratios of oil and surfactant mixture using ternary phase diagram. Based on results of physicochemical properties, we have optimized one formulation. The optimized microemulsion formulation incorporated into carbopol P 934 gel base. The In vitro diffusion of drug release shown maximum (98.6% in 12hrs) for prepared microemulsion gel than marketed gel (60.5% in 16 hrs).