A DRUG/POLYMER COMPLEX, PREFERABLY CIPROFLOXACIN/HPMC, ITS METHOD OF MANUFACTURING USING LYOPHILIZATION AND ITS USE IN AN OSMOTIC DEVICE

摘要

The present invention is directed to a drug /polymer complex, preferably ciprofloxacin/HPMC, its method of manufacturing using lyophilization and its use in an osmotic device. This invention pertains to the enhanced delivery of orally administered pharmaceutical agents and methods, dosage forms and devices thereof. In particular, the invention is directed to methods including providing a low solubility drug having a pKa between about 6 and about 9; dissolving the low solubility drug in an aqueous solution, wherein a pH of the aqueous solution is less than about 6.0; dissolving a hydrophilic polymer in the aqueous solution, wherein the weight ratio of the hydrophilic polymer to the low solubility drug is less than or equal to about 0.15; lyophilizing the aqueous solution to obtain a lyophilized power. Also disclosed are drug formulation made according to the method, and dosage forms that include the drug formulation.