Tazocin

Piperacillin is an extended spectrum beta-lactam antibiotic of the ureidopenicillin class. It is normally used together with a beta-lactamase inhibitor such as tazobactam, which is commercially available as Tazocin or Zosyn. The combination has activity against many Gram-positive and Gram-negative pathogens and anaerobes, including Pseudomonas aeruginosa.
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Piperacillin /pi·per·a·cil·lin/ a semisynthetic broad-spectrum penicillin effective against a wide variety of gram-positive and gram-negative [more]Tazocin - Community and Resources