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Short Communication Open Access
The aim of the present investigation was to develop oral films of valdecoxib using Eudragit EPO and hydroxypropylmethylcellulose. Films of Eudragit EPO, hydroxypropylmethylcellulose and Eudragit EPO combined with hydroxypropylmethylcellulose were prepared by film casting method. Glycerol, menthol and aspartame were incorporated in the drug containing films as plasticizer, cooling agent and sweetener, respectively. The drug loading was 10 mg valdecoxib per 4 cm2 of the film. The films were evaluated for hydration study, folding endurance and in vitro drug dissolution in the distilled water. The films containing both Eudragit EPO and hydroxypropylmethylcellulose films showed neutral surface pH when prepared using 0.1 N HCl as a solvent. Glycerol played a critical role in imparting flexibility to the film and improving the drug release from film. The bitter taste of the drug was masked by using aspartame and menthol accompanied by the synergistic effect of Eudragit and glycerol. Water uptake by films was found to be dependant both on the amount of Eudragit EPO and glycerol. The films containing the higher proportion of glycerol showed higher water uptake and faster drug release at all the sampling time in the in vitro dissolution test. Optimum plasticity was obtained using the required concentration of hydroxypropylmethylcellulose and glycerol. The study revealed that taste masked valdecoxib films can be developed by the selection of appropriate film former and by the use of auxiliary excipients.