Amoxycillin is a third generation broad spectrum Penicillin antibiotic. It inhibits cell wall synthesis of bacteria and is bactericidal in nature.
Clavulanic acid is irreversible beta-lactamase inhibitor. It covers chromosomally mediated and plasmid mediated beta lactamases with ESBLs. It is a beta-lactam drug that functions as a mechanism-based β-Lactamase inhibitor. When combined with penicillin-group antibiotics, it can overcome antibiotic resistance in bacteria that secrete beta-lactamase, which otherwise inactivates most penicillins.