A system intended to be employed for therapeutic purposes incorporates an active ingredient (e.g., a source of nicotine). Representative forms of nicotine include free base (e.g., as a mixture of nicotine and microcrystalline cellulose), a nicotine salt (e.g., as nicotine bitartrate) and nicotine polacrilex. The system preferably comprises a lozenge incorporating the active ingredient, adapted to provide oral administration of nicotine. The lozenge is in contact with a substrate (e.g., hollow tube) that can be manipulated within the mouth of the user (e.g., the hollow tube can be drawn upon to simulate the inhalation of cigarette smoke). As such, the active ingredient is administered and the user is able to experience certain other physiological sensations. The composition is useful for treatment of central nervous system conditions, diseases, and disorders, and can be used as a nicotine replacement therapy.
