Combination antipsychotic therapy in clinical practice.

Objective: Surveys have shown that antipsychotic drug combinations are frequently prescribed, yet few clinical studies have examined this practice. Experts have generally recommended antipsychotic combinations, especially those combining an atypical and a conventional antipsychotic, as a measure of last resort. A survey of prescribers was conducted to examine why combination antipsychotic therapy is being used in outpatient clinical practice.