| abstract |
Novel modified release pharmaceutical composition comprising at least one active agent(s); a polymer system in an amount less than about 80% w/w of the composition comprising at least two swellable pH independent polymers wherein at least one is hydrophilic; optionally other pharmaceutically acceptable excipients is provided. Process for preparation of such compositions and methods of using them is also provided. The compositions are formulated into suitable dosage forms that provide therapeutic concentrations of active agent for extended periods of time. |