Piperacillin Injection is prescribed to be used for treatment of pneumonia, skin infections, and abdominal infections. It has been formulated having piperacillin and tazobactam as active chemical compounds. This injection shows excellent activity against gram negative bacteria as compared to gram positive. It is ureidopenicillin class beta lactam antibiotic that has no bioavailability with protein binding ability of 30%. Piperacillin Injection can be administered via both intravenous & intramuscular routes. It is known to have elimination half life of around 36 to 72 hours and gets excreted in urine & bile.