Extended release of solid dispersion of water soluble PHC was successively prepared by coevaporation with Eudragit RLPO in 1: 5 ratios. The sustainment of drug release was effected by drug-polymer ratio and method of preparation. The analysis by spectral techniques (FT-IR, FT-NMR) suggested possibility of hydrogen bonding. The results of DSC, XRD and SEM studies revealed the reduction in crystallinity of pure drug in solid dispersions as compared to their physical mixtures. The results of solubility studies were in accordance with the in vitro release profile and the...

The objective of this study was to optimize a periodontal drug delivery system containing antibacterial drugs having synergistic activity for the treatment of mixed periodontal infections. Periodontal pockets provide natural reservoir bathed by gingival crevicular fluid that is easily accessible for the insertion of a delivery device. Controlled release delivery of antimicrobials directly into periodontal pockets has received great interest and appears to hold a sound promise in periodontal therapy. Both topical drug delivery and controlled drug release have been termed as local drug...

The method has also been developed for dissolution of antidiabetic drugs. Initially the solubility was determined in different dissolution media. The dissolution study of drugs was performed in 7.8 pH phosphate buffer in which these two drugs shows highest solubility. The dissolution was performed in pH 2.0 medium. The dissolution study was performed using Paddle with sinkers at 75 rpm. The amount of drugs were estimated.

The study demonstrated the possibility of significantly improving the dissolution performance of MX by simultaneous complexation with cyclodextrin. The importance of proper selection of the most suitable counter ion to adequately improve the cyclodextrin - complexation efficiency has been pointed out. PVP showed a synergistic effect when used in combination with HP -CD. Phase solubility experiments demonstrated that the ternary system with PVP (pH 5.8) exhibited a stability constant 12.9 times greater than the binary complex. The drug solubility in the presence of 50mM HP -CD was about 6.23...