Ceftazidime hydrate is a third-generation cephalosporin antibiotic widely used in the medical field to treat various bacterial infections. It is particularly effective against Gram-negative bacteria, including Pseudomonas aeruginosa, making it a critical choice for treating infections in immunocompromised patients, such as those with cystic fibrosis or undergoing chemotherapy. It is commonly prescribed for respiratory tract infections (including lower respiratory infections like pneumonia), urinary tract infections, intra-abdominal infections, skin and soft tissue infections, and septicemia (bloodstream infections). Additionally, it is utilized in hospital settings for managing nosocomial infections and as a prophylactic measure in surgical procedures to prevent postoperative infections. Its broad-spectrum activity against both Gram-negative and some Gram-positive bacteria, along with stability against beta-lactamases, make it a reliable option in combating resistant bacterial strains.