A CONTROLLED RELEASE DELIVERY SYSTEM FOR 1,4-DIHYDROPYRIDINE DERIVATIVES USING POLYOXYETHYLENE-POLYOXYPROPYLENE BLOCK COPOLYMERS

摘要

This application is a complex which comprises a 1,4-dihydropyridine complexed with a block copolymer having the general structure: CHEM wherein a,b and c are selected to provide a molecular weight of from about 1,000 to about 16,000 and from about 10% to about 80% by weight of oxyethylene units.