A<unk>  is one in which two ingredients are added together for additional therapeutic effect. One or both ingredients may be antibiotics. Antibiotic<unk> s are increasingly important because of antimicrobial resistance. This means that individual antibiotics that used to be effective are no longer effective, and because of the absence of new classes of antibiotic, they allow old antibiotics to be continue to be used. In particular, they may be required to treat multiresistant organisms, such as carbapenem-resistant Enterobacteriaceae. Some<unk> s are more likely to result in successful treatment of an infection.
Combination antibiotic
Broad-spectrum antibiotic
Extended-spectrum penicillin
Antibiotic
Beta-lactam antibiotics
Quinolone antibiotic
Cephalosporin
Polypeptide antibiotic