Microwave drying is based on a unique volumetric heating mode facilitated by electromagnetic radiation at 915 or 2,450 MHz. The unique properties and superiority of microwaves over conventional sources of energy have generated immense interest in its use for industrial processing. Microwave technology has been widely embraced in the chemical industry for various applications such as organic syntheses of chemical compounds, material synthesis, sample analysis,drying of pharmaceutical powders and granules, material modification as well as dosage form design.The responses of a lossy powder product to dielectric heating result in rapid energy coupling into the moisture and lead to fast heating and drying.