头孢他啶五水合物是第三代头孢菌素抗生素。头孢菌素由7-氨基头孢烷酸组成，根据其侧链取代基的不同，其大小也不同。研究表明，头孢他啶五水合物对铜绿假单胞菌的活性高于对革兰氏阳性球菌的活性。 Ceftazidime Pentahydrate is a third generation cephalosporin antibiotic. Cephalosporins are composed of 7-aminocephalosporanic acids and are of different sizes depending on their side chain substituents. Studies show that Ceftazidime Pentahydrate has greater activity against|Pseudomonas aeruginosa|than it does against gram-positive cocci.