Optimal use of antimicrobials is essential in the face of escalating antibi
otic resistance, and requires cooperation from all sectors of the health ca
re system. Although antibiotic-restriction policies in the hospital setting
are important in altering microbial susceptibility patterns, an overall re
duction in antibiotic prescriptions in the outpatient setting is more likel
y to significantly impact antibiotic resistance. Education of providers, ap
plication of clinical practice guidelines, audit and feedback activities, a
nd multifaceted interventions all have had an effect in altering antibiotic
prescribing in a research setting. Clinicians must alter antibiotic prescr
ibing for the treatment of infectious diseases, and patients must change th
eir perception of the need for these drugs. Pharmacists can play a major ro
le through clinician education and focused clinical services. With cooperat
ion of health care teams, the effectiveness of available antibiotics may be
sustained and the threat of resistance minimized.