Piperacillin is a type of antibiotic that belongs to the penicillin group. It is used to treat various bacterial infections by stopping the growth of bacteria. Piperacillin is often combined with another medication called tazobactam to enhance its effectiveness against resistant bacteria. This antibiotic is commonly prescribed for infections in the lungs, skin, and urinary tract. It is usually administered through an injection or intravenous (IV) route in a hospital setting. Like all medications, piperacillin can have side effects, so it is important for patients to discuss their medical history with their healthcare provider before starting treatment.