The dissolution is an important element in drug development is mainly related to the absorption and bioavailability. The aim of this study was to determine in vitro dissolution study of theophylline floating tablet release kinetics model. The floating tablets were prepared by a wet granulation method with HPMC K4M CR, NaHCO3, lactose, and magnesium stearate as excipients. The result showed that the theophylline floating tablets had a weight uniformity (CV=1.93%), good hardness (8.4 kg), and low friability (0.05%). Dissolution data were evaluated using DDSolver conducted by 1). Statistical parameters: R2adjusted, mean square error (MSE), weighted sum of squares (WSS), akaike information criterion (AIC), model selection criterion (MSC); 2). Visual goodness of fit (GOF). The results showed that theophylline floating tablets release kinetics followed the Weibull equation. The dissolution curve is exponential shape and theophylline release occurs through a diffusion mechanism.
Key words: floating tablet of theophylline, DDSolver, modeling of drug release
