A pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) having antagonistic action to angiotensin II(wherein the ring W is an optionally substituted N-containing heterocyclic residue R3 is a group capable of forming an anion or a group convertible thereinto X is a direct bond or a spacer having an atomic length of two or less between the phenylene group and the phenyl group and n is an integer of 1 or 2) and an oleaginous substance having a lower melting point, anda method for preparing a pharmaceutical composition for oral use comprising an effective amount of a compound of the formula (I) and an oily substance having a lower melting point, which comprises admixing the compound of the formula (I) with an oily substance having a lower melting point and then subjecting the mixture to molding.
