4 generation of cephalosporins: (DESCRIBE & GIVE the DRUG)

○ First generation: treat mainly GRAM-POSITIVE bacteria ■ Cephalexin ○ Second generation: treat mainly GRAM-POSITIVE bacteria ■ Cefuroxime ○ Third generation: treat GRAM-NEGATIVE BACTERIA ■ Ceftriaxone ○ Fourth generation: treat GRAM-NEGATIVE BACTERIA ■ Cefepime