Objective: The objective of the present work was to study the use of the sintering technique, a relatively new concept in pharmaceutical sciences, in the development of mucoadhesive buccal tablets for ivabradine Hydrochloride. Methods: The method consisted of blending drug, hydroxypropyl methylcellulose (HPMC K100M), carnauba wax, and other excipients followed by direct compression into tablets. The compressed fluffy matrices were sintered at two different constant temperatures like 50 °C and 60 °C for two different periods like 1.5 h and 3 h in a hot air oven. The effect of sintering on tensile strength, dissolution profile, and other parameters were studied. The drug-polymer-excipient compatibility was evaluated by Fourier transform Infrared (FTIR) and differential scanning calorimetric (DSC) studies. Results: The sintering condition markedly affected the drug release properties, hardness, and friability of the tablets. Based on the f2 similarity factor value, Ex-vivo mucoadhesive strength, Ex-vivo residence time, and in vitro dissolution studies, formulation F3SD was selected as an optimized formulation. Drug release followed a non-Fickian diffusion mechanism with the Higuchi model release kinetics. Stability studies of mucoadhesive buccal tablets in normal human saliva indicated the stability of the drug and buccal tablet in the oral cavity. Stability studies as per ICH guidelines revealed that optimized formulation was stable on storage conditions. Conclusion: The sintering technique provides a significant and convenient method for the development of a controlled release dosage form that can be used in the design of mucoadhesive buccal tablets of Ivabradine HCL.

In this present study attempt was made to prepare the floating microspheres of Omeprazol which will help in releasing the proton pump inhibitor drugs in stomach. So that they can be absorbed in stomach for a longer period of time and show better bioavailability. The IR spectrum of pure drug and drug mixture indicated that there was no interaction between polymers and drug. The DSC also revealed that there was no interaction between polymers and drug. The shape of microspheres was almost spherical and smooth as indicated by SEM. Encapsulation efficiency was in the range of 66.23±0.115 to 88.53±0.578%. As the polymer concentration increases, the encapsulation efficiency also increases. In vitro buoyancy studies of the prepared microspheres was in the range of 70.9 to 79.1%.Omeprazole release from microspheres was slow and extended period of time due to increase in polymer concentration. The release mechanisms for all the formulation followed by non-fickian diffusion mechanism. The drug release from formulation OMP6 showed 87.26% for a long period of 12hrs and also observed that increase in Eudragit S100 concentration the drug release was decreased. The release mechanisms for all the formulation followed by non-fickian diffusion mechanism.

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