Naratriptan is used for the treatment of migraine. Formulation and Evaluation of sublingual tablets of Naratriptan for pre and post Compression parameters was undertaken. The tablets were prepared by direct compression method using super disintegrates. After selection of superdisintegrants tablets were prepared by using polymer for reducing the flushing action of saliva and provide enough time for drug absorbed. The prepared tablets were evaluated for their physical and chemical property. The permeation study was performed on Goat mucosa for optimized batch. No interactions were found between drug and excipients. Formulation F2 containing Crosspovidone shows immediate drug release. Formulation F6 containing Chitoson shows fast drug release as compared to superdisintegrants alone. Sublingual tablets were prepared by direct compression method using Crosspovidone as a superdisintegrants. But it is more effective in combination with Chitoson. As a result, sublingual tablet administration of Naratriptan formulated with appropriate excipients and especially with Chitoson seems promising alternative to traditional routes.

Aim of study was to develop bilayered floating drug delivery for treatment of hypertension by delivering loading and maintenance dose for fast achievement of peak plasma concentration and maintaining the same respectively. The prepared drug loaded bilayered floating tablets were evaluated for pre and post compression parameters. Stability study of the promising formulation was also performed. The tablets were prepared by direct compression method. The loading dose was delivered in the form of immediate release layer prepared by different super-disintegrations and maintenance dose was delivered through sustained release layer prepared by using polymers like HPMC K15M and Carbopol 934P. Both the immediate release layer and sustained release layers were separately optimized and then combined to optimize the bilayered floating tablets. No interactions were found between drug and excipients. Formulation containing crosscarmellose sodium shows immediate drug release. Formulation Containing HPMC K15M shows sustained release action and bilayered formulations FB7 shows releases up to 12 hours with good buoyancy and total floating time. All the Bilayered floating formulations buoyant up to 12 hrs. Bilayered floating tablets with release characteristics offer critical advantages such as, site specificity with improved absorption and efficacy. This technology can be inculcated to various medicaments which have stomach as the major site of absorption.

Oral route is the most commonly employed route of drug administration. Although different Route of administration are used for the delivery of drugs, oral route remain the preferred mode. The popularity of the oral route is attributed patient acceptance, ease of administration, accurate dosing, cost effective manufacturing method and generally improved shelflife of the product. Even for sustained release systems the oral route of administration has been investigated the most, because of flexibility in dosage forms design that the oral route offers. With many drugs, the basic goal of therapy is to achieve a steady-state blood level or tissue level that is therapeutically effective and nontoxicfor an extended period of time. 1-4 Bi-layer tablet concept has long been utilized to develop sustained released formulation. Such