Integration of formulary systems with centralized pharmaceutical procurement.

The integration of formularies with pharmaceutical group purchasing and supply systems for multiple hospitals and ambulatory health centers in the Indian Health Service of the US Public Health Service is described. Two models by which these systems have been integrated are presented. The approach of one group of facilities for maintaining high-quality therapeutics in a cost-effective manner was to maintain separate P & T Committees and formularies for each facility, with one centralized drug procurement center. The other group developed a central P & T Committee and formulary to serve all area facilities, as well as continued to maintain a separate P & T Committee at each facility that could act between meetings of the central committee. These models of centralized procurement have provided both decreased drug costs and increased information on drug use within the multifacility systems. In both models, staff have reached consensus on drugs that will provide quality therapeutics in a cost-conscious environment.