A program using satellite pharmacists to improve adverse drug reaction (ADR) reporting in an 1100-bed teaching hospital is described. Because relying on physicians to report ADRs had met with little success (only six reports in seven years), the pharmacy department proposed that pharmacists in satellite pharmacies on patient-care units be called upon to identify and report ADRs. To begin this program, an ADR team composed of a physician, pharmacist, and nurse made weekly rounds of the satellite pharmacies to assist pharmacists in identifying potential ADRs. The FDA definition of an ADR was adopted. Also, inservice education programs about ADR reporting were conducted for pharmacists and nurses. Currently, suspected ADRs are reported to the satellite pharmacist, who forwards a completed drug reaction report form to the assistant director for clinical pharmacy services. Reports are discussed quarterly by the ADR subcommittee of the pharmacy and therapeutics committee; the sub-committee members determine whether any follow-up action is needed. In the first three years after implementation of this program, 306 ADRs were reported; 90% of the reports were filed by pharmacists. An ADR reporting system based on reporting by staff pharmacists has been effective in increasing the number of reported reactions and pharmacist involvement in monitoring patients for ADRs.