ORAL LIQUID PREPARATION

摘要

Disclosed is an oral liquid preparation which contains 2-(4-ethyl-1-piperazinyl)-4-(4-fluorophenyl)-5,6,7,8,9,10- hexahydrocycloocta[b] pyridine (an active ingredient) stably and can exhibit good elution behavior of the active ingredient in a wide pH range. The oral liquid preparation comprises the active ingredient and a dissolution aid for the active ingredient, and has an elution rate of 50% or more in an elution test in accordance with the Japanese pharmacopoeia 15th edition 15 minutes after the start of the test in a second elution test solution.