Novel drug delivery system assists to accomplish better patient compliance. Fast dissolving tablets are one of them and provide innovative drug delivery system in which the consumption of the dosage form without any use of water in taking. Fast dissolving tablets are solid dosage forms containing drugs that get disintegrated within one minute without need of water. In order to overcome the swallowing problems in pediatric and geriatric patients by conventional dosage forms, these fast dissolving tablets are formulated. In recent trends fast dissolving technology is most important and useful for geriatric, pediatric and mentally ill patients. This article overview the salient features, mechanisms of superdisintegrants, technologies and evaluation parameters in the fast dissolving drug delivery systems. The popularity and usefulness of the formulation resulted in development of several mouth dissolving tablet technologies for preparation. The current article is focused on ideal characteristics, advantages and disadvantages, formulation aspects, formulation technologies, evaluation of products and future potential. Various marketed preparations along with numerous scientific advancements made so far in this avenue have also been discussed.