PROBLEM TO BE SOLVED: To provide a means for lowering unpleasant gustatory stimulus without lowering bioavailability in a preparation containing soybean isoflavones. SOLUTION: The subject oral administration composition in a tablet shape comprises soybean isoflavones such as daidzein, genistein, glycitein, daidzin, genistin, glycitin, 6"-O-malonyl daidzin, 6"-O-malonyl genistein, 6"-O-malonyl genistin, 6"-O-malonyl glycitin, 6"-O-aceyl daidzin, 6"-O-acetyl genistin, 6"-O-acetyl glycitin, 6"-O-succinyl daidzin, 6"-O-succinyl genistin or 6"-O-succinyl glycitin or its glycoside. The oral administration composition contains (1) pregelatinized starch and is coated with (2) an enteric coat. COPYRIGHT: (C)2005,JPO&NCIPI
