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Extended release of a large amount of highly water-soluble diltiazem hydrochloride by utilizing counter polymer in polyethylene oxides (PEO)/polyethylene glycol (PEG) matrix tablets

Extended ReleasePharmaceutical ScienceEngineeringPolymer ScienceMicro-encapsulationPharmaceutical TechnologyCounter PolymerPolyethylene OxidesDrug Delivery SystemPharmacologyPolymer Chemistry