Question: is zosyn effective against pseudomonas?
Answer: Comparison of the 3 broadest spectrum beta-lactams: Cefepime, Zosyn, and Carbapenems (non-Ertapenem) have activity against both Gram positive (MSSA, Strep) and Gram negative including Pseudomonas. They do NOT cover: MRSA, VRE, Atypicals, among others.