Type-wise segmentation separates β-lactams & β-lactamase inhibitors, quinolones, carbapenems, aminoglycosides, polymyxins and others. β-lactam/β-lactamase-inhibitor combinations (ceftazidime-avibactam, meropenem-vaborbactam) lead with ≈38 % share, reflecting guideline preference against ESBL and KPC producers. Carbapenems (≈22 %) still anchor empirical therapy, yet volumes plateau as resistance rises. Polymyxins (≈15 %) are restricted to salvage, constrained by nephrotoxicity, while aminoglycosides (≈10 %) serve combination regimens. Quinolones (≈9 %) erode gradually due to global resistance but retain oral step-down utility. Remaining agents—tetracyclines, folate inhibitors, emerging siderophore conjugates—contribute ≈6 %, collectively illustrating a market taxonomy shifting toward novel mechanism-of-action agents.