The study carried out here was focused on developing conventional monolithic controlled release matrix tablet of Atorvastatin calcium using carbomer as release controlling polymer. This system ensures the drug release...The study carried out here was focused on developing conventional monolithic controlled release matrix tablet of Atorvastatin calcium using carbomer as release controlling polymer. This system ensures the drug release at the alkaline pH region where the drug has got maximum solubility. Further the study was concentrated on comparing the impact of gelling agent polyvinyl pyrrolidone on drug release. Quality by design tools were considered during formulation development and the polymer concentrations were optimized adopting the statistical tool, design of experiments (DoE). The optimized formulation of present study exhibited desired controlled drug release characteristics in the alkaline pH conditions and at acidic environment the drug dissolution was minimal as intended.展开更多
An ICP-OES method has been developed to estimate Calcium and Phosphorous in In vitro phosphate binding study of Eliphos Tablets. The method is selective and is capable of detecting calcium and phosphorous in the prese...An ICP-OES method has been developed to estimate Calcium and Phosphorous in In vitro phosphate binding study of Eliphos Tablets. The method is selective and is capable of detecting calcium and phosphorous in the presence of other trace elements. The method has been validated using RF power of 1500 watts, plasma flow of 15L/min, Nebuliser flow of 0.8 L/min and plasma view at radial mode for calcium and axial mode for phosphorus. The wavelength was monitored for calcium and phosphorous at 317.933 nm and 213.677 nm respectively. The method has been validated in terms of specificity, precision, linearity, accuracy, limit of quantification and ruggedness. The In vitro binding studies were performed for Eliphos Tablets at eight dif- ferent phosphate concentrations by incubating at 37.0?C and analysis was performed using the validated method to estimate free calcium and phosphorus. The objective of the study is to provide an alternate In vitro method to estimate the binding capacity of calcium acetate tablets to avoid the expensive in-vivo bio clinical studies.展开更多
文摘The study carried out here was focused on developing conventional monolithic controlled release matrix tablet of Atorvastatin calcium using carbomer as release controlling polymer. This system ensures the drug release at the alkaline pH region where the drug has got maximum solubility. Further the study was concentrated on comparing the impact of gelling agent polyvinyl pyrrolidone on drug release. Quality by design tools were considered during formulation development and the polymer concentrations were optimized adopting the statistical tool, design of experiments (DoE). The optimized formulation of present study exhibited desired controlled drug release characteristics in the alkaline pH conditions and at acidic environment the drug dissolution was minimal as intended.
文摘An ICP-OES method has been developed to estimate Calcium and Phosphorous in In vitro phosphate binding study of Eliphos Tablets. The method is selective and is capable of detecting calcium and phosphorous in the presence of other trace elements. The method has been validated using RF power of 1500 watts, plasma flow of 15L/min, Nebuliser flow of 0.8 L/min and plasma view at radial mode for calcium and axial mode for phosphorus. The wavelength was monitored for calcium and phosphorous at 317.933 nm and 213.677 nm respectively. The method has been validated in terms of specificity, precision, linearity, accuracy, limit of quantification and ruggedness. The In vitro binding studies were performed for Eliphos Tablets at eight dif- ferent phosphate concentrations by incubating at 37.0?C and analysis was performed using the validated method to estimate free calcium and phosphorus. The objective of the study is to provide an alternate In vitro method to estimate the binding capacity of calcium acetate tablets to avoid the expensive in-vivo bio clinical studies.
