Widespread emergence of multidrug resistant (MDR) bacterial pathogens is a problem of global dimension. MDR infections are difficult to treat and frequently associated with high mortality. More than one antibiotic is commonly used to treat such infections, but scientific evidence does not favor use of combination therapy in most cases. However, there are certain subgroups where combination therapy may be beneficial. Identifying the subgroup of patients who are likely to benefit from combination therapy and restricting its use only for those specific indications can be helpful in controlling excessive use of antibiotics.