Ceftazidime: third-generation cephalosporin antibiotic which kills bacteria by inhibiting cell wall synthesis. Avibactam: new beta-lactamase inhibitor that prevents the resistance enzymes (ESBLs, Amp C, KPC, OXA-48) against ceftazidime and thus it is effective against highly resistant organisms. Offers life-saving therapy in serious hospital-acquired and multidrug-resistant bacterial disease.