Amoxicillin 500mg with clavulanic acid 125mg (co‑amoxiclav) is a broad‑spectrum oral antibiotic used for acute bacterial sinusitis, otitis media, exacerbations of chronic bronchitis, community‑acquired pneumonia, cystitis, pyelonephritis, and skin/soft‑tissue infections such as cellulitis, animal bites, and severe dental abscess with spreading cellulitis. The clavulanate component inhibits beta‑lactamases, restoring amoxicillin’s activity against resistant organisms.