ST. DAVIDS, Penn--Wyeth-Ayerst Laboratories' Zosyn (pipera-cillin/tazobactam) is now indicated for use in treating moderate to severe nosocomial pneumonia caused by piperacillin(Drug information on piperacillin)-resistant beta-lactamase-producing strains of Staphylococcus aureus. In a multicenter study of 300 patients with nosocomial pneumonia, the rate of clinical cure or improvement for Zosyn plus tobramycin(Drug information on tobramycin) was 74%, compared with 50% for cef-tazidime plus tobramycin, the company said.
