Discontinue if an allergic reaction occurs. Angioedema, anaphylaxis. Observe for signs of superinfection w/ non-susceptible organisms including fungi. Not to be used in patients w/ pneumonia; nosocomially acquired infections, known or suspected bacteremia, conditions requiring hospitalization, significant health problems (including immunodeficiency or functional asplenia). Severe renal impairment. Not to be used in patients w/ hepatic disease. Pregnancy & lactation. Elderly or debilitated patients.