Preventives or remedies for heart failure

摘要

Preparations for preventing or treating acute heart failure, chronic heart failure at a phase of acute exacerbation or heart failure at a phase of transition to chronic heart failure, which contain D-alanyl-3-(naphthalen-2-yl)-D-alanyl-L-alanyl-L-tryptophyl-D-phenylalanyl-L-lysinamide and/or salts thereof as an active ingredient.