Disclosed are: a therapeutic agent for indications for haloperidol, which comprises a-lactoalbumin as an active ingredient; a beverage or food which contains the therapeutic agent for indications for haloperidol; a-lactoalbumin for use in the treatment of indications for haloperidol; and a method for treating indications for haloperidol, which comprises administering an effective amount of a-lactoalbumin to a patient who needs the treatment. The therapeutic agent for indications for haloperidol is safe and can be used in a simple manner.