Drug interactions are an important and often underappreciated cause of adve
rse clinical outcomes. This review considers the mechanisms for several cli
nically important drug interactions that involve the major classes of anti-
infective agents. This approach is intended to complement the use of text-b
ased references and computer databases so that physicians and pharmacists c
an avoid prescribing and dispensing drugs that have adverse interactions. A
m J Med. 1999; 106:227-237. (C) 1999 by Excerpta Medica, Inc.