This application describes compositions of receptor inhibitors, including antipsychotic agents, for example haloperidol, and methods of use for alleviating clinical depression, improving cognition and/or treating other syndromes, conditions or diseases for which anti-depressant agents are prescribed. Furthermore, this application describes compositions and methods to induce supersensitivity in dopamine D2 and other receptors involved in depression and/or cognition as a means of alleviating clinical depression or improving cognition.