Gastric preparation with sustained release

摘要

PCT No. PCT/JP90/01365 Sec. 371 Date Apr. 24, 1992 Sec. 102(e) Date Apr. 24, 1992 PCT Filed Oct. 24, 1990 PCT Pub. No. WO91/06281 PCT Pub. Date May 16, 1991.A gastric preparation developed in order to solve the technical problems of conventional preparations, which is prepared by the bilayer packing technique and comprises 5 to 60%, desirably 10 to 40% of a rapid release portion which can establish the therapeutic level of a drug shortly after the administration and 95 to 40%, desirably 90 to 60% of a sustained release portion which has a specific gravity or 1 or less and can maintain a satisfactory release rate.