Effect of a pharmacist on adverse drug events and medication errors in outpatients with cardiovascular disease.
Murray MD, Ritchey ME, Wu J, et al. Effect of a pharmacist on adverse drug events and medication errors in outpatients with cardiovascular disease. Arch Intern Med. 2009;169(8):757-63. doi:10.1001/archinternmed.2009.59.
This retrospective analysis of two randomized trials found that counseling provided by a pharmacist was associated with fewer adverse drug events, even among complex, chronically ill patients.

