Disclosed are methods for the treatment of chronic heart failure, comprising administering to an animal in need thereof an effective amount of perhexiline, or a pharmaceutically acceptable salt thereof, to treat said chronic heart failure. The chronic heart failure maybe non-ischaemic or ischaemic. Also disclosed is the use of perhexiline in the manufacture of a medicament to treat chronic heart failure, including chronic heart failure of a non-ischaemic origin and chronic heart failure of an ischaemic origin.