Application of Box-Behnken design to formulate and optimize multipolymeric fast dissolving film of rizatriptan benzoate

Dharmik M. Mehta, Divyang J. Dave, Dhaval V. Dadhaniya, Pragna K. Shelat, Punit B. Parejiya, Bhavesh S. Barot


The present investigation aims at formulation and optimization of multipolymeric fast dissolving film of rizatriptan benzoate.
Three film forming polymers namely hydroxypropyl methylcellulose (HPMC), maltodextrin and polyvinylalcohol were
explored using Box-Behnken experimental design to derive optimized fast dissolving film formulation using desirability function.
Analysis of variance (ANOVA) was performed for five dependent variables tensile strength, folding endurance, load at yield,
percentage elongation and percentage drug release in 30 s (Q30). Mathematical regression equations were derived by applying
ANOVA and validated using checkpoint batches. Results of the experimental design exposed that the effect of independent
factors HPMC and maltodextrin significantly influenced the mechanical properties and percentage drug release from the
film. Optimized batch was derived based on set criteria using desirability function. Reponses of the optimized formulation
were tensile strength (500 N/m2), folding endurance (203), load at yield (15.06 N/m2), percentage elongation (4.56%) and
Q30 (60.03%) falling under acceptable limits. High percentage drug release from the film in simulated saliva and simulated
gastric fluid reveal fast dissolving characteristics. Fast dissolving dosage form can help patients with diseases like migraine

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