Amoxicillin?is a broad-spectrum, semisynthetic aminopenicillin antibiotic with bactericidal activity.?Amoxicillin?binds to and inactivates?penicillin-binding protein (PBP) 1A located on the inner membrane of the bacterial cell wall. Inactivation of PBPs interferes with the cross-linkage of?peptidoglycan?chains necessary for bacterial cell wall strength and rigidity. This interrupts bacterial cell wall synthesis and results in the weakening of the bacterial cell wall and causes cell lysis.