The concept of fast dissolving drug delivery system emerged from the desire to provide patient with conventional mean of taking their medication. Oral routes of drug administration have wide acceptance up to 50-60% of total dosage forms. Solid dosage forms are popular because of ease of administration, accurate dosage, self-medication, pain avoidance and most importantly the patient compliance. The most popular solid dosage forms are being tablets and capsules; one important drawback of this dosage forms for some patients, is the difficulty to swallow. The excipients that are currently used as well as those that are expected to be used for the future development of improved FDTs are described in the review paper.