RELEASE CONTROL COMPOSITIONS

摘要

A controlled release composition for oral administration, which comprises a physiologically active substance which is a compound represented by the formula: wherein n is an integer of 1 to 3, and Ar is an aromatic ring which may be substituted, or a salt thereof, and a hydrophilic polymer, or a controlled release composition for oral administration, wherein a core containing the physiologically active substance is coated with a coating layer containing a polymer, is provided.