Within the market taxonomy, the Types segmentation distinguishes six chemical families that underpin the overall Beta-lactam and Beta-lactamase Inhibitors market size. Penicillins remain the most mature class, contributing approximately 30 % of global revenue due to their extensive safety profile and low production cost, especially for amoxicillin‑clavulanate combinations. Cephalosporins follow with a 28 % share, driven by third‑ and fourth‑generation variants that address resistant Gram‑negative organisms in hospital settings. Carbapenems command a 22 % premium share, reflecting their role as last‑line therapy for multidrug‑resistant infections, albeit constrained by stewardship policies. Monobactams represent a niche 5 % segment, primarily used in patients with β‑lactam allergies because of their narrow Gram‑negative spectrum. Beta‑lactamase inhibitors themselves, such as tazobactam, sulbactam, and newer diazabicyclooctanes, add 10 % by extending the efficacy of partner β‑lactams. Emerging β‑lactam‑β‑lactamase inhibitor combinations contribute the remaining 5 %, illustrating a shift toward fixed‑dose regimens that simplify dosing and improve adherence. This typology clarifies each class’s quantitative impact on the overall market.