SAME MECHANISM OF ACTION (ACTIVATES PENICILLIN-BINDING PROTEIN) VERY SUSCEPTIBLE TO BETA-LACTAMASE. GIVEN w/ CLAVULANIC ACID. can treat: ○ URINARY TRACT INFECTIONS (UTI) ○ RESPIRATORY TRACT INFECTIONS (RTI) ○ MENINGITIS ○ INFECTIONS CAUSED BY SALMONELLA ○ OTITIS MEDIA (MIDDLE EAR INFECTIONS)