<unk>  is a fixed-dose combination medication of the common penicillin-derived antibiotic<unk>  and<unk> , an inhibitor of bacterial beta-lactamase. Two different forms of the drug exist. The first, developed in 1987 and marketed in the United States under the brand name Unasyn, generic only outside the United States, is an intravenous antibiotic. The second, an oral form called sultamicillin, is marketed under the brand name Ampictam outside the United States. And generic only in the United States,<unk>  is used to treat infections caused by bacteria resistant to beta-lactam antibiotics.<unk>  blocks the enzyme which breaks down<unk>  and thereby allows<unk>  to attack and kill the bacteria.
Ampicillin/sulbactam
Ceftazidime/avibactam
Piperacillin/tazobactam
Imipenem/cilastatin
Ceftolozane/tazobactam
Avibactam
Meropenem
Imipenem/cilastatin/relebactam