A controlled, randomized study was conducted in two chain pharmacies to determine the clinical value of comprehensive pharmacy services for hypertensive patients in a chain pharmacy setting. Twenty-seven patients were enrolled as intervention participants with 26 control subjects. Monthly services for the intervention group included blood pressure and heart rate assessments and counseling on lifestyle modifications and drug therapy. Control patients received initial and final blood pressure measurements and minimal counseling. Both study and control groups completed quality-of-life questionnaires upon entering and completing the study. Results showed that blood pressure control was significantly improved in the study group. Compliance rates as well as energy/fatigue scores (a quality-of-life scale) improved in the study group compared with the control population. Community pharmacists in chain stores could have a beneficial effect on the health care of large numbers of patients if pharmaceutical care programs were developed.