Objectives In the present study, an attempt is made to develop novel multifunctional sustained-release minitablets in a capsule system by film coating Fesoterodine for the treatment of urinary incontinence (increased urinating frequency). Methodology The direct compression technique was used to formulate the minitablets, and coating was applied using hydroxypropyl methylcellulose (HPMC) phthalate. The pre-formulation study was performed using tools like differential scanning calorimetry (DSC), infrared spectroscopy (IR) and post-formulation parameters such as hardness, thickness, weight variation, uniformity, and drug release. Drug release kinetics were studied for the formulations F1–F11. Results All the pre- and post-formulation parameters were found to be within the limits. F1 and F2 result in burst release of the drug within 30 minutes. For the F3, F4, and F5 formulations, HPMC phthalate-coated minitablets show almost 100% drug release in 3, 4, and 5 hours, respectively. F6, F7, and F8 (2.5%, 5%, and 10% formaldehyde-coated minitablets, respectively) show drug releases in the small intestine, and the release was prolonged for 24 hours, whereas F9, F10, and F11 (2.5%, 5%, and 10% glutaraldehyde-coated minitablets, respectively) release in the small intestine, but drug release takes more than 20 hours. Conclusion Film-coated minitablets were satisfactorily developed in terms of various post-compression parameters like hardness, thickness, friability, weight variation, and content uniformity. IR and DSC studies revealed no significant drug excipient interactions. HPMC phthalate-coated minitablets released in the buffer, and it was supposed that the drug releases in the intestine, which leads to better absorption and follows Korsmeyer-Peppas release kinetics.

The aim of current study was to develop suitable gastroretentive tablet of Levamisole HCl for prolonging the retention of Levamisole in stomach. Floating tablets were prepared by using HPMC K4M and Carbopol 934p in combination and their effect on floating, swelling and release of Levamisole HCl was studied. Optimization of drug release were carried out by taking different concentration of HPMC K4M and Carbopol 934p. It was found that HPMC and Carbopol with concentration 35% and 22% in tablet give satisfactory release and batch was selected for 32 factorial design. In this study all the formulation were subjected to physical evaluation parameter such as Hardness, Friability, content uniformity all were found to be within limits. In-vivo study F5 formulation was carried out to check the buoyancy of tablet. Tablet float in stomach of rabbit for 8 hours without adhering to gastric mucous. Stability studies of F5 formulation indicated that formulation is stable for 3 months at 40o C and 75% RH. The formulation retained its integrity and In-vitro performance.