Fremgangsmåte for fremstilling av en farmasöytisk formulering med kontrollert frigjöring for oral administrering omfattende atskilte enheter omfattende acrivastin eller et salt derav

摘要

The invention relates to a controlled release pharmaceutical formulation for oral administration which comprises discrete units comprising acrivastine or a salt thereof coated with a mixture containing: a) a copolymer or polymer containing repeating monomer units selected from alkyl esters of acrylic and methacrylic acids and b) ethyl cellulose, and a process for preparing such formulations.