Below are some of the details of Piperacillin(generic)
 

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 Tazomed(Neomed)Tazocin, Zobactin or Zosyn. The combination has activity against many Gram-positive and Gram-negative pathogens and anaerobes, including Pseudomonas aeruginosa.