A retrospective comparison of haloperidol and hydroxyzine combination therapy with haloperidol alone in the treatment of overactive delirium.

Haloperidol alone and haloperidol plus hydroxyzine are both effective in the treatment of overactive delirium. However, the concomitant use of hydroxyzine with haloperidol may not improve the efficacy of treatment of overactive delirium compared to haloperidol alone.